message: github: update issue link and wording
diff: @@ -11,7 +11,7 @@ body:
  - label: >
  I've looked through [troubleshooting](https://clementtsang.github.io/bottom/nightly/troubleshooting),
  [known problems](https://clementtsang.github.io/bottom/nightly/support/official/#known-problems), and
  - [existing issues](https://github.com/ClementTsang/bottom/issues) for similar issues.
  + [existing open issues](https://github.com/ClementTsang/bottom/issues?q=is%3Aopen+is%3Aissue) for similar issues.
  required: true
  - type: textarea
  