Resolve "Create a rule that gets the construction date from cadaster data for Tabula dataset."

Closes #20 (closed)

\approve @ds @laurens @chengzhi

building/02_process/tabula/date_from_cadaster/date_from_cadaster.py

@@ -21,7 +21,7 @@ class DateFromCadasterRule(AbstractRule):
 
     def __call__(self, database: PostGISDatabase, geometry: str, *args, **kwargs):
         """
-        The current building's geometry is tested for intersection with a cadastral parcel in
+        A building's geometry is tested for intersection with a cadastral parcel in
         the source database, if there is cadaster data for this location. There is currently
         only cadastral data available for the Valencia Province in Spain, as reflected by this
         rule's geographic boundary filter.