Remove extra \n

Author: zyn0217

clang/docs/ReleaseNotes.rst

@@ -889,7 +889,6 @@ Bug Fixes to C++ Support
 - Clang now identifies unexpanded parameter packs within the type constraint on a non-type template parameter. (#GH88866)
 - Fixed an issue while resolving type of expression indexing into a pack of values of non-dependent type (#GH121242)
 
-
 Bug Fixes to AST Handling
 ^^^^^^^^^^^^^^^^^^^^^^^^^