add newline

Author: ayokunle321

clang/include/clang/Basic/DiagnosticASTKinds.td

@@ -1042,4 +1042,4 @@ def warn_unpacked_field
 def warn_unaligned_access : Warning<
   "field %1 within %0 is less aligned than %2 and is usually due to %0 being "
   "packed, which can lead to unaligned accesses">, InGroup<UnalignedAccess>, DefaultIgnore;
-}
+}