Updates graph api docs

docs/clmc-service.md

@@ -306,7 +306,7 @@ with **/clmc-service** so that the nginx reverse proxy server (listening on port
     * Response:
 
         The response to this request is a JSON content, which contains the result from the Cypher query including forward latencies, reverse latencies and service function response time along with the
-        calculated round trip time and global tag values for the given service function endpoint.
+        calculated round trip time and tag values for a potential measurement.
 
         Returns a 400 Bad Request error if the URL parameters are invalid
 
@@ -339,6 +339,9 @@ with **/clmc-service** so that the nginx reverse proxy server (listening on port
                 "flame_sf": "minio_1",
                 "flame_location": "DC1",
                 "flame_server": "DC1"
+            },
+            "local_tags": {
+               "traffic_source": "DC2"
             }
         }
         ```
@@ -367,6 +370,9 @@ with **/clmc-service** so that the nginx reverse proxy server (listening on port
                 "flame_sf": "minio_1",
                 "flame_location": "DC1",
                 "flame_server": "DC1"
+            },
+            "local_tags": {
+               "traffic_source": "DC2"
             }
         }
         ```