docs(ref): Move target-edition to last

Author: epage

src/doc/src/reference/cargo-targets.md

@@ -268,14 +268,6 @@ to run tests and benchmarks.
 Tests have the [`cfg(test)` conditional expression][cfg-test] enabled whether
 or not the harness is enabled.
 
-### The `edition` field
-
-The `edition` field defines the [Rust edition] the target will use. If not
-specified, it defaults to the [`edition` field][package-edition] for the
-`[package]`. This field should usually not be set, and is only intended for
-advanced scenarios such as incrementally transitioning a large package to a
-new edition.
-
 ### The `crate-type` field
 
 The `crate-type` field defines the [crate types] that will be generated by the
@@ -313,6 +305,13 @@ name = "my-pg-tool"
 required-features = ["postgres", "tools"]
 ```
 
+### The `edition` field
+
+The `edition` field defines the [Rust edition] the target will use. If not
+specified, it defaults to the [`edition` field][package-edition] for the
+`[package]`. This field should usually not be set, and is only intended for
+advanced scenarios such as incrementally transitioning a large package to a
+new edition.
 
 ## Target auto-discovery