Applied google-readability-namespace-comments clang-tidy fixes

src/common/generators/plantuml/generator.cc

@@ -70,4 +70,4 @@ std::string to_plantuml(message_t r)
     }
 }
 
-}
+} // namespace clanguml::common::generators::plantuml

src/common/generators/plantuml/generator.h

@@ -572,4 +572,4 @@ template <typename C, typename D> void generator<C, D>::init_env()
         return res;
     });
 }
-}
+} // namespace clanguml::common::generators::plantuml