Increase takeoff altitude and sleep

[danylevskyi]

To make the example for telemetry_takeoff_and_land more representative I propose to increase MIS_TAKEOFF_ALT parameter and sleep after taking off.

Waiting for drone to connect...
-- Connected to drone!
Altitude: 0
Flight mode: LAND
-- Global position state is good enough for flying.
-- Setting takeoff altitude
-- Arming
-- Taking off
Flight mode: TAKEOFF
Altitude: 1
Altitude: 2
Altitude: 3
Altitude: 4
Altitude: 5
Altitude: 6
Altitude: 7
Altitude: 8
-- Landing
Flight mode: LAND
Altitude: 7
Altitude: 6
Altitude: 5
Altitude: 4
Altitude: 3
Altitude: 2
Altitude: 1
Altitude: 0
Altitude: -1

UPD:
Action has been used to increase takeoff altitude.

[julianoes]

One correction but thanks for the contribution and fix!