[clang-format] Fix documentation for FixNamespaceComments

Fixes PR40409

Differential Revision: https://reviews.llvm.org/D61174

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@359280 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ClangFormatStyleOptions.rst

@@ -1346,7 +1346,7 @@ the configuration (without a prefix: ``Auto``).
      true:                                  false:
      namespace a {                  vs.     namespace a {
      foo();                                 foo();
-     } // namespace a;                      }
+     } // namespace a                       }
 
 **ForEachMacros** (``std::vector<std::string>``)
   A vector of macros that should be interpreted as foreach loops

include/clang/Format/Format.h

@@ -1139,7 +1139,7 @@ struct FormatStyle {
   ///    true:                                  false:
   ///    namespace a {                  vs.     namespace a {
   ///    foo();                                 foo();
-  ///    } // namespace a;                      }
+  ///    } // namespace a                       }
   /// \endcode
   bool FixNamespaceComments;