style(docs-infra): fix docs examples for tslint rule semicolon (#38143)

This commit updates the docs examples to be compatible with the
`semicolon` tslint rule.

This is in preparation of updating the docs examples `tslint.json` to
match the one generated for new Angular CLI apps in a future commit.

PR Close #38143

aio/content/examples/styleguide/src/04-10/app/shared/filter-text/filter-text.service.ts

@@ -18,7 +18,7 @@ export class FilterTextService {
             match = true;
             break;
           }
-        };
+        }
         return match;
       });
       filteredList = filtered;