[clang-tools-extra] [clang-tidy] Fix readability-identifier-naming FP with DefaultCase on function templates (PR #189788)

[Daniil Dudkin via cfe-commits]

================
@@ -429,8 +429,12 @@ Changes in existing checks
   it easier to see which specific enumerators need explicit initialization.
 
 - Improved :doc:`readability-identifier-naming
-  <clang-tidy/checks/readability/identifier-naming>` check by fixing incorrect
-  naming style application to C++17 structured bindings.
+  <clang-tidy/checks/readability/identifier-naming>` check by 
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unterumarmung wrote:

```suggestion
  <clang-tidy/checks/readability/identifier-naming>` check:
```

by ... Fixed sounds weird

https://github.com/llvm/llvm-project/pull/189788