fix bug 1198799 - Handle {{xref_cssgradient}}
fix bug 1198799 - Handle {{xref_cssgradient}}

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