property-doc-generated.md

[MurakamiShinyu]

The property-doc-generated.md has been not updated since 2017.6.
https://github.com/vivliostyle/vivliostyle.js/blob/2017.6/doc/property-doc-generated.md

The Development wiki says:
https://github.com/vivliostyle/vivliostyle.js/wiki/Development#maintaining-documents

• docs/property-doc-generated.md
  • This file can be generated with scripts/generate-property-doc.js script as follows: (Currently not working, need fix!)

   cd scripts
   curl -o anchors.json -H "Accept: application/json" 'https://test.csswg.org/shepherd/api/spec/?anchors&draft'  # Download spec data
   node ./generate-property-doc
  

We should remove this file for now, and will republish it after fixing the problem.
The file name and title of this document needs to be reconsidered.
Note that the main CSS support document has been "supported-features.md".