Re-check Vale and fix errors

[erinecon]

Applicable ticket: ISD-3949

Overview

Run Vale checks locally and fix errors.

Rationale

There's a bug in operator-workflows that points to an older version of the Canonical Vale style checks. Therefore some of the checks will be missed in the GitHub CI.

I skipped the docs under jobmanager/client since those are auto-generated docs.

Juju Events Changes

None

Module Changes

None

Library Changes

None

Checklist

• The charm style guide was applied.
• The contributing guide was applied.
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex).
• The changelog is updated with changes that affects the users of the charm.
• The application version number is updated in github-runner-manager/pyproject.toml.

Either discourse-gatekeeper will update the documentation on Charmhub or I'll do it after the approval of this PR.

Since these are trivial changes, I don't think the changelog needs to be updated.

Since these are doc-only changes, I don't think I need to update the version number in github-runner-manager/pyproject.toml

[github-actions]

Test results for commit b1b9ec6

Test coverage for b1b9ec6

Wrote XML report to coverage/coverage.xml

Static code analysis report

Run started:2025-08-06 13:58:50.099882

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2026
  Total lines skipped (#nosec): 2
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 1

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[yanksyoon]

Thanks for the changes, they look good to me!