Document another repo setting
(In addition to https://github.com/open-telemetry/community/blob/main/docs/how-to-configure-new-repository.md)
+## General
+
* Automatically delete head branches: CHECKED
So that bot PR branches will be deleted.
+## Actions > General
+
+* Fork pull request workflows from outside collaborators:
+ "Require approval for first-time contributors who are new to GitHub"
+
+ To reduce friction for new contributors
+ (the default is "Require approval for first-time contributors").
+
## Branch protections
(In addition to https://github.com/open-telemetry/community/blob/main/docs/how-to-configure-new-repository.md)
