[clang-tools-extra] [clang-tidy] Rename google-build-namespaces to misc-anonymous-namespace-in-header (PR #173484)

[via cfe-commits]

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@@ -362,6 +362,11 @@ New check aliases
   <clang-tidy/checks/modernize/avoid-c-style-cast>`
   keeping initial check as an alias to the new one.
 
+- Renamed :doc:`google-build-namespaces <clang-tidy/checks/google/build-namespaces>` to
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EugeneZelenko wrote:

Should be before `google-readability-casting`.

https://github.com/llvm/llvm-project/pull/173484