re-organise badge examples (#1800)

Re-organise badge examples into categories:

- Build
- Chat
- Dependencies
- Downloads
- Funding
- Issue Tracking
- License
- Rating
- Social
- Version
- Other

services/gem/gem.js

@@ -203,7 +203,7 @@ class GemOwner extends BaseJsonService {
   }
 
   static get category() {
-    return 'miscellaneous';
+    return 'other';
   }
 
   static get url() {
@@ -267,7 +267,7 @@ class GemRank extends BaseJsonService {
   }
 
   static get category() {
-    return 'miscellaneous';
+    return 'rating';
   }
 
   static get url() {