update caniuse mapping - fixes 736

made much simplier due to the work of @stucox and @SlexAxton in 831 and 966
property is displaytable not display-table
Merge pull request #990 from patrickkettner/update-caniuse-mapping

update caniuse mapping - fixes 736
Merge pull request #991 from patrickkettner/displaytable-typo

property is displaytable not display-table