fix: correct the order of splits for C

This is a point of personal preference (but so is this whole project).
My preferred split order when editing is as follows:

Impl | Lib | Build

Signed-off-by: Sam Stuewe <[email protected]>

Author: HalosGhost

skel.d/c/Makefile

@@ -20,7 +20,7 @@ run: $(PROG)
 	./$(PROG)
 
 edit:
-	vis '+vsplit main.c' Makefile main.h
+	vis '+vsplit main.h' Makefile main.c
 
 clean:
 	$(RM) $(PROG)