Improve consistency in the GitHub Actions workflow for the Fluent linter

This commit tweaks the Fluent linter workflow to match the other
workflow files we have, so we make sure the steps have a newline between
them for better readability and align names and descriptions of steps
with how they are called in the other workflow files we have.

.github/workflows/fluent_linter.yml

@@ -19,19 +19,24 @@ permissions:
   contents: read
 
 jobs:
-  linter:
+  lint:
+    name: Lint
     runs-on: ubuntu-latest
+
     steps:
-      - name: Clone repository
+      - name: Checkout repository
         uses: actions/checkout@v4
-      - name: Set up Python 3
+
+      - name: Use Python 3.10
         uses: actions/setup-python@v4
         with:
           python-version: '3.10'
           cache: 'pip'
-      - name: Install Python dependencies
+
+      - name: Install Fluent dependencies
         run: |
           pip install -r .github/requirements.txt
-      - name: Lint reference
+
+      - name: Lint Fluent reference files
         run: |
           moz-fluent-lint ./l10n/en-US --config .github/linter_config.yml