[clang-tools-extra] [clang-tidy] Update google todo checker with style guide changes. (PR #165565)

[via cfe-commits]

================
@@ -329,6 +329,10 @@ Changes in existing checks
   adding an option to allow pointer arithmetic via prefix/postfix increment or
   decrement operators.
 
+- Improved :doc:`google-readability-todo
+  <clang-tidy/checks/google/readability-todo>` check to accept the new todo
----------------
EugeneZelenko wrote:

```suggestion
  <clang-tidy/checks/google/readability-todo>` check to accept the new TODO
```

For consistency with documentation.

https://github.com/llvm/llvm-project/pull/165565