Update README.md

Author: bnasslahsen

README.md

@@ -33,7 +33,7 @@ Gradle Groovy DSL
 plugins {
       id("org.springframework.boot") version "2.2.4.RELEASE"
       id "com.github.johnrengelman.processes" version "0.5.0"
-      id("org.springdoc.openapi-gradle-plugin") version "1.0.0"
+      id("org.springdoc.openapi-gradle-plugin") version "1.2.0"
 }
 ```
 
@@ -42,7 +42,7 @@ Gradle Kotlin DSL
 plugins {
     id("org.springframework.boot") version "2.2.4.RELEASE"
     id("com.github.johnrengelman.processes") version "0.5.0"
-    id("org.springdoc.openapi-gradle-plugin") version "1.0.0"
+    id("org.springdoc.openapi-gradle-plugin") version "1.2.0"
 }
 ```