Fix the rate limits documentation
Fix the rate limits documentation

The service name used to store the geocoding rate limits is geocoder, not geocoding.

CartoDB/geocoder-api,CartoDB/dataservices-api,CartoDB/dataservices-api,CartoDB/dataservices-api,CartoDB/geocoder-api,CartoDB/dataservices-api,CartoDB/geocoder-api,CartoDB/geocoder-api