[clang-tools-extra] [clang-tidy][misc-include-cleaner]Avoid to insert same include header multiple times (PR #65431)

[kadir çetinkaya via cfe-commits]

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@@ -224,7 +224,8 @@ Changes in existing checks
 
 - Improved :doc:`misc-include-cleaner
   <clang-tidy/checks/misc/include-cleaner>` check by adding option
-  `DeduplicateFindings` to output one finding per symbol occurrence.
+  `DeduplicateFindings` to output one finding per symbol occurrence 
+  and avoid fixes insert same include header multiple times.
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kadircet wrote:

rather than `and` can you add a separate sentence?

https://github.com/llvm/llvm-project/pull/65431