Another CI fix

Author: nifadyev

.github/workflows/pr.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Write git diff to temp file
-      run: git diff --unified=0 *.md translations/*/*.md | grep -Po '(?<=^\+)(?!\+\+).*' > ${{ runner.temp }}/diff.md
+      run: "git diff --unified=0 *.md translations/*/*.md | grep -Po '(?<=^\+)(?!\+\+).*' > ${{ runner.temp }}/diff.md"
     - uses: DavidAnson/markdownlint-cli2-action@v17
       with:
         globs: "${{ runner.temp }}/diff.md"