Merge pull request #7199 from readthedocs/pr-build-no-search

Mention that we don't index search in PR builds

Author: ericholscher

docs/guides/autobuild-docs-for-pull-requests.rst

@@ -47,6 +47,14 @@ Features
 
     GitHub Build Status Reporting for Pull Requests
 
+Limitations
+-----------
+
+Currently we don't index search for pull request builds.
+Searches will default to the default experience for your tool.
+This is a feature we plan to add,
+but don't want to overwhelm our search indexes used in production.
+
 Troubleshooting
 ---------------