Comments: Update A2-7-3 impl scope.

Author: lcartey

rule_packages/cpp/Comments.json

@@ -70,7 +70,10 @@
           "tags": [
             "maintainability",
             "readability"
-          ]
+          ],
+          "implementation_scope": {
+            "description": "Function scope declarations are excluded from this rule as they are restricted in scope to only a single function."
+          }
         }
       ],
       "title": "All declarations of 'user-defined' types, static and non-static data members, functions and methods shall be preceded by documentation."