docs: fix dead link of build.gradle description (#4441)

Signed-off-by: ZhangJian He <[email protected]>

site3/website/docs/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.10.0/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.11.1/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.12.1/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.13.0/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.14.8/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.15.5/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.16.5/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.17.0/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.5.1/api/ledger-api.md

@@ -33,7 +33,7 @@ If you're using [Maven](https://maven.apache.org/), add this to your [`pom.xml`]
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.6.2/api/ledger-api.md

@@ -78,7 +78,7 @@ Or you can use a separate shaded artifact `bookkeeper-server-shaded`.
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.7.3/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.8.2/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {

site3/website/versioned_docs/version-4.9.2/api/ledger-api.md

@@ -49,7 +49,7 @@ shaded library, which relocate classes of protobuf and guava into a different na
 
 ### Gradle
 
-If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://spring.io/guides/gs/gradle/) build configuration file:
+If you're using [Gradle](https://gradle.org/), add this to your [`build.gradle`](https://docs.gradle.org/current/userguide/build_file_basics.html) build configuration file:
 
 ```groovy
 dependencies {