chore: Update discovery artifacts (#1394)

## Deleted keys were detected in the following stable discovery artifacts:
bigquery v2 https://github.com/googleapis/google-api-python-client/commit/73965daab29cd6ae78004ede62f8c6c80f5587a3

## Discovery Artifact Change Summary:
feat(bigquery): update the api https://github.com/googleapis/google-api-python-client/commit/73965daab29cd6ae78004ede62f8c6c80f5587a3
feat(realtimebidding): update the api https://github.com/googleapis/google-api-python-client/commit/34d5d2606070b0c6fef053d6b88a65be085227b5
diff --git a/docs/dyn/index.md b/docs/dyn/index.md
index 643aff1..8716f09 100644
--- a/docs/dyn/index.md
+++ b/docs/dyn/index.md
@@ -715,6 +715,7 @@
 
 
 ## privateca
+* [v1](http://googleapis.github.io/google-api-python-client/docs/dyn/privateca_v1.html)
 * [v1beta1](http://googleapis.github.io/google-api-python-client/docs/dyn/privateca_v1beta1.html)