fixed readme

Ivan Razuvaev · Ivan Razuvaev · commit c7bdae3ada74 · 2020-12-23T14:39:29.000+03:00
diff --git a/ruby/README.md b/ruby/README.md
@@ -42,5 +42,5 @@ Usage:  [options]
 ## Regenerating protobufs
 
 ```
-rake protobuf:generate
+bundle exec rake protobuf:generate
 ```
