Improve build step names

Author: cknitt

.github/workflows/ci.yml

@@ -336,11 +336,11 @@ jobs:
         run: ./scripts/test_syntax.sh
         shell: bash
 
-      - name: Build runtime/stdlib with rewatch
+      - name: Build @rescript/runtime
         run: yarn workspace @rescript/runtime rescript build
         shell: bash
 
-      - name: Check for changes in lib folder
+      - name: Check for changes in @rescript/runtime/lib
         run: git diff --exit-code lib/js lib/es6
         working-directory: packages/@rescript/runtime