changed position() to home()

Changed the usage of position() with home() to make sure that drone always gets the correct home altitude as if the drone is in air position() will provide the current altitude which if used without caution can result in issues.

Author: TheSharad

examples/goto.py

@@ -20,8 +20,8 @@ async def run():
             print("Global position estimate ok")
             break
 
-    print("Fetching altitude amsl at home location....")
-    async for terrain_info in drone.telemetry.position():
+    print("Fetching amsl altitude at home location....")
+    async for terrain_info in drone.telemetry.home():
         absolute_altitude = terrain_info.absolute_altitude_m
         break