[doc] Update release notes (#4317)

docs/pages/7_0_0_release_notes.md

@@ -255,6 +255,8 @@ The following previously deprecated rules have been finally removed:
     *   [#4079](https://github.com/pmd/pmd/issues/4079): \[cli] Split off CLI implementation into a pmd-cli submodule
 * apex-design
     *   [#2667](https://github.com/pmd/pmd/issues/2667): \[apex] Integrate nawforce/ApexLink to build robust Unused rule
+* java
+    * [#4317](https://github.com/pmd/pmd/issues/4317): \[java] Some AST nodes should not be TypeNodes
 * java-bestpractices
     * [#342](https://github.com/pmd/pmd/issues/342): \[java] AccessorMethodGeneration: Name clash with another public field not properly handled
     * [#755](https://github.com/pmd/pmd/issues/755): \[java] AccessorClassGeneration false positive for private constructors