JSON query broken due to extra space

We've encountered a weird bug here when using a ```JSONB``` column.

if you have a where clause like 

```.where("event_metadata.metadata -> 'replaced' != 'true'")```

The query will be replaced by

```event_metadata.metadata - > 'replaced' != 'true'```

notice the extra space between the ```-``` and ```>```

This prevents the query from being run.