Add Wikimedia map to the list of available maps

[nyurik]

I tried to add it myself to https://josm.openstreetmap.de/wiki/Maps but I keep getting this error:

Warning: Invalid Wiki page: You are not allowed to change the default entries!

Please add this entry:

<entry>

<name>Wikimedia Map</name>
<id>wikimedia-map</id>
<type>tms</type>
<default>true</default>
<url>​https://maps.wikimedia.org/osm-intl/{zoom}/{x}/{y}.png</url>
<max-zoom>18</max-zoom>
<attribution-text mandatory='true'>© OpenStreetMap contributors, CC-BY-SA</attribution-text>
<attribution-url>​https://www.openstreetmap.org/</attribution-url>
<valid-georeference>true</valid-georeference>

</entry>