jna/plugins: fixed readme for sort key
@@ -22,7 +22,7 @@ The plugin will then assume the array elements are primitive types (e.g. string
If the array elements are not primitive types and have sub-keys, it is possible to provide a name to this sub-key.
E.g. to sort by a sub-key `/nr`:
-``check/sorted = nr``
+``check/sorted = /nr``
It is also possible to change the sorting direction by setting the key `check/sorted/direction` to either *asc* or *desc*.
