Fix termcolour include in tester.c

src/tester/tester.c

@@ -1,6 +1,6 @@
 #include "tester.h"
 #include "aliases.h"
-#include "termcolour/termcolour.h"
+#include "termcolour.h"
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>