Update pgp-io.md

Author: dr-jts

pgp-io.md

@@ -8,14 +8,14 @@
 ## Input
 
 ### Parse Error loading OSM Polygons
-https://gis.stackexchange.com/questions/346641/postgis-parse-error-invalid-geometry-after-using-st-multi-but-st-isvalid
+<https://gis.stackexchange.com/questions/346641/postgis-parse-error-invalid-geometry-after-using-st-multi-but-st-isvalid>
 
 #### Solution
 Problem is incorrect order of columns, so trying to load an integer into a geometry field.
 Better error messages would make this more obvious.
 
 ### Parse Error from non-WKT format text
-https://gis.stackexchange.com/questions/311955/error-parse-error-invalid-geometry-postgis?noredirect=1&lq=1
+<https://gis.stackexchange.com/questions/311955/error-parse-error-invalid-geometry-postgis>
 
 ## GeoJSON