update contrib import action

.github/workflows/contrib.yml

@@ -7,20 +7,20 @@ on:
 permissions:
   contents: write # to update _contrib
   pull-requests: write # to send the updated _contrib PRs
-  
+
 jobs:
   update-contrib:
     name: Update _contrib
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout website
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
 
       - name: Checkout hyper
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
           repository: hyperium/hyper
@@ -96,11 +96,11 @@ jobs:
       - name: Lowercase filenames and replace underscores
         run: |
           for f in hyper/docs/*; do
-            mv -vn "$f" "$(echo "$f" | tr '[:upper:]' '[:lower:]' | tr '_' '-')"; 
+            mv -vn "$f" "$(echo '$f' | tr '[:upper:]' '[:lower:]' | tr '_' '-')";
           done
 
       - name: Copy the hyper docs to contrib
-        run: |  
+        run: |
           mkdir -p _contrib
           cp -a hyper/docs/. _contrib/