fix spelling

Author: michelleangela

Extension/src/nativeStrings.json

@@ -369,7 +369,7 @@
     "cm_addfunction": {
         "text": "Automatic add function"
     },
-    "refactor_create_declaration_defintion_unknown_error": "Create declaration/definition failed with unknown error.",
+    "refactor_create_declaration_definition_unknown_error": "Create declaration/definition failed with unknown error.",
     "refactor_create_default_delete": "Creating defaulted or deleted functions is not supported.",
     "refactor_function_copied_to_clipboard": "Function signature was copied to clipboard.",
     "refactor_function_not_created": "Unable to create function '{0}'.",