Fix /correction char display

1f8b1eb740 made it possible to have utf8 chars as correction chars. So since then prefs_get_correction_char() doesn't return a regular char but a char*.
Seems like there was an oversight that we need to use %s then.

src/ui/console.c

@@ -2046,7 +2046,7 @@ cons_correction_setting(void)
     }
 
     char *cc = prefs_get_correction_char();
-    cons_show("LMC indication char (/correction char)                             : %c", cc);
+    cons_show("LMC indication char (/correction char)                             : %s", cc);
     free(cc);
 }