add map size for Rondo on telemetry-objects -> Location

[aslansari]

There are list of map sizes in rst/telemetry-objects.rst file at Location section. Map Rondo needs to be added to the list.

- Location values are measured in centimeters.
- (0,0) is at the top-left of each map.
- The range for the X and Y axes is 0 - 816,000 for Erangel, Miramar, Taego, Vikendi and Deston.
- The range for the X and Y axes is 0 - 408,000 for Sanhok.
- The range for the X and Y axes is 0 - 306,000 for Paramo.
- The range for the X and Y axes is 0 - 204,000 for Karakin and Range.
- The range for the X and Y axes is 0 - 102,000 for Haven.

- The range for the X and Y axes is 0 - 816,000 for Erangel, Miramar, Taego, Vikendi and Deston.
+ The range for the X and Y axes is 0 - 816,000 for Erangel, Miramar, Taego, Vikendi, Deston and Rondo.