chore: revert update doc links from googleapis.dev to cloud.google.com (

#1063)

This reverts commit 942930e.

.repo-metadata.json

@@ -2,7 +2,7 @@
     "name": "bigquery",
     "name_pretty": "Google Cloud BigQuery",
     "product_documentation": "https://cloud.google.com/bigquery",
-    "client_documentation": "https://cloud.google.com/python/docs/reference/bigquery/latest",
+    "client_documentation": "https://googleapis.dev/python/bigquery/latest",
     "issue_tracker": "https://issuetracker.google.com/savedsearches/559654",
     "release_level": "ga",
     "language": "python",

README.rst

@@ -18,7 +18,7 @@ processing power of Google's infrastructure.
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-bigquery.svg
    :target: https://pypi.org/project/google-cloud-bigquery/
 .. _BigQuery: https://cloud.google.com/bigquery/what-is-bigquery
-.. _Client Library Documentation: https://cloud.google.com/python/docs/reference/bigquery/latest
+.. _Client Library Documentation: https://googleapis.dev/python/bigquery/latest
 .. _Product Documentation: https://cloud.google.com/bigquery/docs/reference/v2/
 
 Quick Start