Polish 5.9.3 Release Notes

Author: sbrannen

documentation/src/docs/asciidoc/release-notes/release-notes-5.9.3.adoc

@@ -40,10 +40,11 @@ JUnit repository on GitHub.
   `@MethodSource("myFactory([I)"` (which was already supported) and
   `@MethodSource("myFactory(java.lang.String[])` instead of
   `@MethodSource("myFactory([Ljava.lang.String;)`.
-* Exceptions thrown for undeletable files when cleaning up a temporary directory created
-  via `@TempDir` now include the root cause.
-* Allow lifecycle methods to be declared as `private` again for backwards compatibility
-  but document it as a discouraged practice.
+* Exceptions thrown for files that cannot be deleted when cleaning up a temporary
+  directory created via `@TempDir` now include the root cause.
+* Lifecycle methods are allowed to be declared as `private` again for backwards
+  compatibility; however, using `private` visibility for lifecycle methods is strongly
+  discouraged and will be disallowed in a future release.
 
 ==== Deprecations and Breaking Changes
 
@@ -54,7 +55,7 @@ JUnit repository on GitHub.
 * ❓
 
 
-= [[release-notes-5.9.3-junit-vintage]]
+[[release-notes-5.9.3-junit-vintage]]
 === JUnit Vintage
 
 ==== Bug Fixes