Update onekey proton_c readme (#9758)

A3 won't work. The code says A1 and A2 and it works. prints out an "a"
2020-07-20 10:41:21 -04:00 · 2020-07-20 10:41:21 -04:00 · 2e08c72e95
parent 57f408cff5
commit 2e08c72e95
1 changed files with 1 additions and 1 deletions
--- a/keyboards/handwired/onekey/proton_c/readme.md
+++ b/keyboards/handwired/onekey/proton_c/readme.md
@ -1,3 +1,3 @@
 # Proton C onekey

-To trigger keypress, short together pins *A3* and *A2*.
+To trigger keypress, short together pins *A1* and *A2*.