Add link to web platform tests for html-import-element.es
Add link to web platform tests for html-import-element.es

devpunks/snuggsi,snuggs/snuggsi,devpunks/snuggsi,devpunks/snuggsi,snuggs/snuggsi,devpunks/snuggsi,snuggs/snuggsi,snuggs/snuggsi,devpunks/snuggsi