chore: update repo-metadata.json client_documentation link (#1641)

* chore: updating doc link

* chore: fix missing comma

.repo-metadata.json

@@ -2,7 +2,7 @@
   "name": "bigquery",
   "name_pretty": "Cloud BigQuery",
   "product_documentation": "https://cloud.google.com/bigquery",
-  "client_documentation": "https://googleapis.dev/java/google-cloud-bigquery/latest",
+  "client_documentation": "https://cloud.google.com/java/docs/reference/google-cloud-bigquery/latest/history",
   "api_description": "is a fully managed, NoOps, low cost data analytics service.\nData can be streamed into BigQuery at millions of rows per second to enable real-time analysis.\nWith BigQuery you can easily deploy Petabyte-scale Databases.",
   "issue_tracker": "https://issuetracker.google.com/savedsearches/559654",
   "release_level": "ga",