Fix link (omit trailing "/")

Author: AndrewCRichards

README.md

@@ -40,7 +40,7 @@ These methods include the following optional parameters:
 |---------|-----|
 |`entity_type`|Choose between `"pes"` or `"gsp"`. If querying for national data, this parameter can be set to either value (or left to it's default value) since setting `entity_id` to `0` will always return national data.|
 |`entity_id`|Set `entity_id=0` (the default value) to return nationally aggregated data. If `entity_type="pes"`, specify a _pes_id_ to retrieve data for, else if `entity_id="gsp"`, specify a _gsp_id_. For a full list of GSP and PES IDs, refer to the lookup table hosted on National Grid ESO's data portal [here](https://www.neso.energy/data-portal/gis-boundaries-gb-grid-supply-points).|
-|`extra_fields`|Use this to extract additional fields from the API such as _installedcapacity_mwp_. For a full list of available fields, see the [PV_Live API Docs](https://api.pvlive.uk/pvlive/docs/).|
+|`extra_fields`|Use this to extract additional fields from the API such as _installedcapacity_mwp_. For a full list of available fields, see the [PV_Live API Docs](https://api.pvlive.uk/pvlive/docs).|
 |`period`|Set the desired temporal resolution (in minutes) for PV outturn estimates. Options are 30 (default) or 5.|
 |`dataframe`|Set `dataframe=True` and the results will be returned as a Pandas DataFrame object which is generally much easier to work with. The columns of the DataFrame will be _pes_id_ or _gsp_id_, _datetime_gmt_, _generation_mw_, plus any extra fields specified.|