message: Monitoring: Add docs link for regular expressions on the silence form
diff: @@ -1408,7 +1408,11 @@ const SilenceForm_: React.FC<SilenceFormProps> = ({ defaults, Info, title }) =>
  <SectionHeading text="Alert Labels" />
  <p className="co-help-text">
  Alerts with labels that match these selectors will be silenced instead of firing.
  - Label values can be matched exactly or with a regular expression.
  + Label values can be matched exactly or with a{' '}
  + <ExternalLink
  + href="https://github.com/google/re2/wiki/Syntax"
  + text="regular expression"
  + />
  </p>
  </div>
  </div>
  