Add a missing word in CHANGES.md

CHANGES.md

@@ -14,7 +14,7 @@
 
 - Item rows in main window and tray menu are now indexed from one instead of
   zero by default (#1085). This can be reverted to the old behavior using
-  command `copyq row_index_from_one false`.
+  command `copyq config row_index_from_one false`.
 
 - A tag can be marked as "locked" in configuration. Items with such tags cannot
   be removed until the tag is removed or "unlocked".