Pr preview a11y fix. (#115)

* fix(script): removed space.

* fix(a11y): Fixed a11y tests

.github/workflows/pr-preview.yml

@@ -35,7 +35,6 @@ jobs:
           key: ${{ runner.os }}-npm-14-${{ secrets.CACHE_VERSION }}-${{ hashFiles('package-lock.json') }}
       - run: npm install --frozen-lockfile
         if: steps.yarn-cache.outputs.cache-hit != 'true'
-
       - run: npm run build
         name: Build component groups
       - uses: actions/cache@v2
@@ -49,7 +48,7 @@ jobs:
       - run: node .github/upload-preview.js packages/module/public
         name: Upload docs
         if: always()
-      - run: npm run serve & npm run test
+      - run: npm run serve:docs & npm run test:a11y
         name: a11y tests
       - run: node .github/upload-preview.js packages/module/coverage
         name: Upload a11y report