The docs for Text elide need to be improved

I have explained here what are the current issues: https://stackoverflow.com/questions/61059264/enabling-elide-property-in-the-qml-text-element-but-in-right-to-left-user-int/71188945#71188945

The Text.elide in Qt Quick docs mention "Multi-length" strings, but there isn't enough information what that is.