update ci markdownlint runs-on to ubuntu-22.04

Signed-off-by: ChrisLiu <[email protected]>

.github/workflows/ci.yaml

@@ -50,17 +50,17 @@ jobs:
           skip-pkg-cache: true
 
   markdownlint-misspell-shellcheck:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     # this image is build from Dockerfile
     # https://github.com/pouchcontainer/pouchlinter/blob/master/Dockerfile
     container: pouchcontainer/pouchlinter:v0.1.2
     steps:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Run misspell
-        run: find  ./* -name  "*"  | grep -v vendor | xargs misspell -error
-      - name: Run shellcheck
-        run: find ./ -name "*.sh" | grep -v vendor | xargs shellcheck
+        run: find  ./* -name  "*"  | xargs misspell -error
+      - name: Lint markdown files
+        run: find  ./ -name  "*.md" | grep -v enhancements |  grep -v .github
 
   unit-tests:
     runs-on: ubuntu-20.04