Out of date images in implementing a schema plugin

[archaeogeek]

The two images used in https://geonetwork-opensource.org/manuals/4.0.x/en/customizing-application/implementing-a-schema-plugin.html#editor-behaviour-adding-schema-suggestions-xml-and-schema-substitutes-xml are out of date and refer to GeoNetwork 2.x. They are:

• https://github.com/geonetwork/doc/blob/develop/source/customizing-application/img/Editor-Constraints-Choices-Modified.png
• https://github.com/geonetwork/doc/blob/develop/source/customizing-application/img/Editor-Constraints-Choices.png