Maps and Global Positioning System: add link to awesome-openstreetmap (#3218)

README.md

@@ -1176,7 +1176,7 @@ Tools and software to help with education and learning.
 
 **[`^        back to top        ^`](#)**
 
-_See also: [awesome-gis](https://github.com/sshuair/awesome-gis)_
+_See also: [awesome-openstreetmap](https://github.com/osmlab/awesome-openstreetmap), [awesome-gis](https://github.com/sshuair/awesome-gis)_
 
 - [Bicimon](https://github.com/knrdl/bicimon) - Bike Speedometer as Progressive Web App. ([Demo](https://knrdl.github.io/bicimon/)) `MIT` `HTML5`
 - [Geo2tz](https://github.com/noandrea/geo2tz) - Get the timezone from geo coordinates (lat, lon). `MIT` `Go/Docker`