fixed wrong link to bulk geocoding.

Author: mbasa

README.md

@@ -154,7 +154,7 @@ $ psql -U postgres addresses
 
 ## Notes    
 
-* For `Bulk Geocoding`, wherein addresses located in a field of a table are geocoded, please see this [WIKI Entry](https://github.com/mbasa/pgGeocoder/wiki/bulk_geocoding).
+* For `Bulk Geocoding`, wherein addresses located in a field of a table are geocoded, please see this [WIKI Entry](https://github.com/mbasa/pgGeocoder/wiki/Bulk-Geocoding).
 
 * To create `TRIGGERS` that will geocode addresses automatically on an `INSERT` or `UPDATE` operation, please see this [WIKI Entry](https://github.com/mbasa/pgGeocoder/wiki/Creating-Triggers-for-the-Geocoder).