Update clang-tools-extra/docs/ReleaseNotes.rst

Co-authored-by: Baranov Victor <[email protected]>

Author: lakshsidhu04

clang-tools-extra/docs/ReleaseNotes.rst

@@ -491,6 +491,7 @@ Changes in existing checks
   <clang-tidy/checks/readability/duplicate-include>` check by introducing the
   ``AllowedDuplicateIncludes`` option, which exempts specified headers from
   duplicate include warnings.
+  
 - Improved :doc:`readability-use-concise-preprocessor-directives
   <clang-tidy/checks/readability/use-concise-preprocessor-directives>` check to
   generate correct fix-its for forms without a space after the directive.