Merge pull request 'Change suggested flash baudrate to 1000000' (#27) from hails/tangara-fw:building-readme-baudrate into main

Reviewed-on: https://codeberg.org/cool-tech-zone/tangara-fw/pulls/27

BUILDING.md

@@ -34,7 +34,7 @@ There is also a `.env.fish` for fish users.
 onto your board, something like:
 
 ```
-idf.py -p /dev/ttyUSB0 -b 115200 flash
+idf.py -p /dev/ttyUSB0 -b 1000000 flash
 ```
 
 (give or take the correct serial port)