Link podcast:location geo att def to where it is completely specified.

docs/1.0.md

@@ -359,7 +359,7 @@ verbiage (i.e. "Austin, TX"), but it shouldn't be depended on to be parseable in
 cannot be blank.  Please do not exceed `128 characters` for the node value or it may be truncated by aggregators.
 
 ### Attributes
- - **geo:** (recommended) This is a latitude and longitude given in "geo" notation (i.e. "geo:30.2672,97.7431").
+ - **geo:** (recommended) This is a latitude and longitude given in ["geo" notation](https://github.com/Podcastindex-org/podcast-namespace/blob/main/location/location.md#geo-recommended) (i.e. "geo:30.2672,97.7431").
  - **osm:** (recommended) The Open Street Map identifier of this place, given using the OSM notation (i.e. "R113314")
 
 ### Examples