fix typo in comment about package (#26638)

Summary:
This PR only fixes a typo in `ModuleHolder.java`.

## Changelog

[Internal] [Fixed] - Fix typo in comment about package
Pull Request resolved: https://github.com/facebook/react-native/pull/26638

Differential Revision: D17661204

Pulled By: cpojer

fbshipit-source-id: 77ab92b7bfff300961e0a32183188a6e57e99b3d

ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleHolder.java

@@ -99,7 +99,7 @@ public class ModuleHolder {
     }
   }
 
-  /* pacakge */ synchronized boolean hasInstance() {
+  /* package */ synchronized boolean hasInstance() {
     return mModule != null;
   }