Remove check markdown format action

We can use a linting tool for this rather than needing to bring in
Docker and all its dependencies.

Author: thomasleese

.github/actions/check-markdown-format/action.yaml

@@ -51,17 +51,6 @@ jobs:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check file format"
         uses: ./.github/actions/check-file-format
-  check-markdown-format:
-    name: "Check Markdown format"
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-    steps:
-      - name: "Checkout code"
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0 # Full history is needed to compare branches
-      - name: "Check Markdown format"
-        uses: ./.github/actions/check-markdown-format
   check-english-usage:
     name: "Check English usage"
     runs-on: ubuntu-latest

.github/workflows/stage-1-commit.yaml

@@ -15,7 +15,6 @@ The [pre-commit](https://pre-commit.com/) framework is a powerful tool for manag
 
 - Scripts
   - [`check-file-format.sh`](../../scripts/githooks/check-file-format.sh)
-  - [`check-markdown-format.sh`](../../scripts/githooks/check-markdown-format.sh)
   - [`scan-secrets.sh`](../../scripts/githooks/scan-secrets.sh)
 - Configuration
   - [`pre-commit.yaml`](../../scripts/config/pre-commit.yaml)

docs/user-guides/Run_Git_hooks_on_commit.md

@@ -15,14 +15,6 @@ repos:
     args: ["check=staged-changes"]
     language: script
     pass_filenames: false
-- repo: local
-  hooks:
-  - id: check-markdown-format
-    name: Check Markdown format
-    entry: ./scripts/githooks/check-markdown-format.sh
-    args: ["check=staged-changes"]
-    language: script
-    pass_filenames: false
 - repo: local
   hooks:
   - id: check-english-usage