fix small typo....
@ -121,7 +121,7 @@ Using the keyboard the following events can be triggered:
- `h` ... set heartrate running, and on further presses increase by 10 bpm
- `H` ... stop heartrate
- `i` ... take screenshot
- `I` ... start/stop Gif scren capture
- `I` ... start/stop Gif screen capture
## Littlefs-do helper