Update README.md

fix typo

Author: amotzte

README.md

@@ -2,7 +2,7 @@ This app allows you to change mock location from terminal using adb in order to
 
 Usage:
 ```batch
-adb [-s <specific device>] shell am broadcast -a send.mockgi [-e lat<latitude>] [-e lon <longitude>]
+adb [-s <specific device>] shell am broadcast -a send.mock [-e lat<latitude>] [-e lon <longitude>]
         [-e alt <altitude>] [-e accurate <accurate>]
 ```
 
@@ -13,4 +13,4 @@ adb  shell am broadcast -a stop.mock
 Example:
 ```batch
 adb  shell am broadcast -a send.mock -e lat 15.3 -e lon 99
-```
+```