fix bug 1198784 - Handle {{xref_csscolorvalue}}
fix bug 1198784 - Handle {{xref_csscolorvalue}}

The macro takes two parameters, but these are unused in current
compatibility data.

jwhitlock/web-platform-compat,jwhitlock/web-platform-compat,renoirb/browsercompat,mdn/browsercompat,renoirb/browsercompat,mdn/browsercompat,mdn/browsercompat,renoirb/browsercompat,jwhitlock/web-platform-compat