chore: simplify support policy description (#3638)

Have it more explicitly reflect the reality that this is a volunteer run
project.

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: rickeylev

docs/support.md

@@ -1,9 +1,10 @@
 # Support Policy
 
-The Bazel community maintains this repository. Neither Google nor the Bazel team
-provides support for the code. However, this repository is part of the test
-suite used to vet new Bazel releases. See the <project:#contributing>
-page for information on our development workflow.
+This is a community maintained project run by volunteers. What that means in
+practice is:
+
+* Responses to issues and PRs depend on available time and energy.
+* If you care, contribute (see <project:#contributing>) and get involved.
 
 ## Supported rules_python Versions