fix code link in readme

Author: skylot

README.md

@@ -1,5 +1,5 @@
 ## JADX Plugin Examples
 
 Various examples of jadx plugins api usage:
-- Bulk rename ([code](https://github.com/jadx-decompiler/jadx-plugin-examples/blob/main/src/main/jadx/plugins/examples/bulkrename/BulkRenamePlugin.java))
+- Bulk rename ([code](https://github.com/jadx-decompiler/jadx-plugin-examples/blob/main/examples/bulk-rename/src/main/java/jadx/plugins/examples/bulkrename/BulkRenamePlugin.java#L16))  
   Example how to rename lots of classes, fields, methods and method parameters in jadx-gui