Make it clearer how to fix lint errors (#74)

.github/workflows/check-dist.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Compare the expected and actual dist/ directories
         run: |
           if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
-            echo "Detected uncommitted changes after build.  See status below:"
+            echo "::error::Detected uncommitted changes after build. Run 'npm run build' and commit the changes."
             git diff --text -v
             exit 1
           fi

.github/workflows/test.yml

@@ -26,7 +26,7 @@ jobs:
           npm run all
       - name: Make sure no changes from linters are detected
         run: |
-          git diff --exit-code
+          git diff --exit-code || (echo "::error::Please run 'npm run all' to fix the issues" && exit 1)
   test-latest-version:
     runs-on: ${{ matrix.os }}
     strategy: