chore: update doc links from googleapis.dev to cloud.google.com (#287)

Updating the reference documentation website from googleapis.dev to cloud.google.com for the index pages. Also updating references in the README.

Author: dandhlee

packages/google-cloud-python-speech/.repo-metadata.json

@@ -2,7 +2,7 @@
     "name": "speech",
     "name_pretty": "Cloud Speech",
     "product_documentation": "https://cloud.google.com/speech-to-text/docs/",
-    "client_documentation": "https://googleapis.dev/python/speech/latest",
+    "client_documentation": "https://cloud.google.com/python/docs/reference/speech/latest",
     "issue_tracker": "https://issuetracker.google.com/savedsearches/559758",
     "release_level": "ga",
     "language": "python",

packages/google-cloud-python-speech/README.rst

@@ -18,7 +18,7 @@ variants, to support your global user base.
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-speech.svg
    :target: https://pypi.org/project/google-cloud-speech/
 .. _Cloud Speech API: https://cloud.google.com/speech
-.. _Client Library Documentation: https://googleapis.dev/python/speech/latest
+.. _Client Library Documentation: https://cloud.google.com/python/docs/reference/speech/latest
 .. _Product Documentation:  https://cloud.google.com/speech
 
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