docs(readme): update build status badge URL

Replace workflow-specific badge URL with standard shields.io badge format for better consistency with other badges

Author: Nikoro

.github/workflows/release.yaml

@@ -35,13 +35,13 @@ jobs:
         run: dart format --output=none --set-exit-if-changed .
 
       - name: Run tests
-        run: dart test --test-randomize-ordering-seed=random --reporter=expanded
+        run: dart test --test-randomize-ordering-seed=random
 
       - name: Dry run publish
         run: dart pub publish --dry-run
 
       - name: Publish to pub.dev
-        run: dart pub publish --force --skip-validation
+        run: dart pub publish --force
 
   release:
     needs: publish

README.md

@@ -11,7 +11,7 @@ One, yet powerful <a href="#emojis-extension">emojis</a> String extension
     <img alt="Pub Package" src="https://tinyurl.com/mvjwxt98">
   </a>
   <a href="https://github.com/Nikoro/emoji_extension/actions">
-    <img alt="Build Status" src="https://github.com/Nikoro/emoji_extension/actions/workflows/build.yaml/badge.svg">
+    <img alt="Build Status" src="https://img.shields.io/github/actions/workflow/status/Nikoro/emoji_extension/ci.yaml?label=build">
   </a>
   <a href="https://codecov.io/gh/Nikoro/emoji_extension">
     <img alt="Code Coverage" src="https://codecov.io/gh/Nikoro/emoji_extension/branch/main/graph/badge.svg">