Correct misplayed ``` in key-positions.md (#680)

xuhdev · web-flow · commit 3b04415801a1 · 2025-11-06T19:59:52.000Z
This causes an error when copy the whole snippet as a whole.
diff --git a/assets/key-positions.md b/assets/key-positions.md
@@ -23,4 +23,4 @@
 #define THUMBS_RIGHT 37 38    \
                      53       \
                      68 69 70 \
-                     ```
+```

-Original file line number
+Diff line change
 #define THUMBS_RIGHT 37 38    \
 \
 69 70 \
 -                     ```
 +```