Fix circular dependency in CI

Right now we commit docs changes, which breaks CI b/c a GHA commit will not trigger other actions. This is confusing for contributors because it looks like CI just isn't running.

Some other options:

• see what options there are in the GHA world to allow this
• fail instead of auto-commit w/ guidance on how to fix the failure (this requires folks to install helm-docs locally, maybe we could have a manually triggered action, etc.)
• something else?

Start by tracing the GitHub Actions workflow that commits documentation changes and review how helm-docs is invoked. Compare the proposed trigger and failure-handling options; done means the chosen approach prevents documentation commits from suppressing subsequent actions and clearly guides contributors when CI cannot proceed.