Fix connector definition (#15)

Author: dmoverton

connector-definition/connector-metadata.yaml

@@ -5,7 +5,7 @@ supportedEnvironmentVariables:
   - name: MONGODB_DATABASE_URI
     description: The URI for the MongoDB database
 commands:
-  update: hasura-mongodb update
+  update: hasura-ndc-mongodb update
 cliPlugin:
   name: ndc-mongodb
   version: