Fix the README link for Google Stackdriver Logging.

Author: supriyagarg

README.rst

@@ -28,7 +28,7 @@ This client supports the following Google Cloud Platform services:
 .. _Google Cloud Pub/Sub: https://github.com/GoogleCloudPlatform/gcloud-python#google-cloud-pubsub
 .. _Google BigQuery: https://github.com/GoogleCloudPlatform/gcloud-python#google-bigquery
 .. _Google Cloud Resource Manager: https://github.com/GoogleCloudPlatform/gcloud-python#google-cloud-resource-manager
-.. _Google Stackdriver Logging: https://github.com/GoogleCloudPlatform/gcloud-python#google-cloud-logging
+.. _Google Stackdriver Logging: https://github.com/GoogleCloudPlatform/gcloud-python#google-stackdriver-logging
 .. _Google Stackdriver Monitoring: https://github.com/GoogleCloudPlatform/gcloud-python#google-stackdriver-monitoring
 
 If you need support for other Google APIs, check out the