tweaks: move a translator hint to where xgettext will see it

A translator hint needs to be placed on the line directly before
the relevant string.

src/nano.c

@@ -1284,8 +1284,8 @@ void unbound_key(int code)
 		 * (from the keyboard) that nano does not recognize. */
 		statusline(AHEM, _("Unknown sequence"));
 #ifndef NANO_TINY
-		/* TRANSLATORS: This refers to an unbound function key. */
 	else if (code > KEY_F0 && code < KEY_F0 + 25)
+		/* TRANSLATORS: This refers to an unbound function key. */
 		statusline(AHEM, _("Unbound key: F%i"), code - KEY_F0);
 #endif
 	else if (code > 0x7F)