Fix formatting in BUILD_GUIDE.md (#1208)

diff --git a/doc/BUILD_GUIDE.md b/doc/BUILD_GUIDE.md
index 1750191836d3d0dcd603145d961e5110bb455d9c..78cf00b917d5ffa655cb2b3fe67fb3af0ed5eae2 100644 (file)
--- a/doc/BUILD_GUIDE.md
+++ b/doc/BUILD_GUIDE.md
@@ -96,7 +96,7 @@ The keyboard `config.h` is included only if the keymap one doesn't exist. The fo
 ```
 #undef MY_SETTING
 #define MY_SETTING 4
-```c
+```
 
 For a value of `4` for this imaginary setting. So we `undef` it first, then `define` it.