caches: fix truncated html tag
caches: fix truncated html tag

googlecodelabs/amp-pwa-workbox,google-developer-training/amp-ilt,emoreno911/pwa-training-labs,googlecodelabs/workbox-indexeddb,google-developer-training/pwa-training-labs,emoreno911/pwa-training-labs,verioussmith/pwa-training-labs,googlecodelabs/workbox-lab,googlecodelabs/workbox-indexeddb,googlecodelabs/workbox-lab,google-developer-training/pwa-training-labs,verioussmith/pwa-training-labs,google-developer-training/amp-ilt,googlecodelabs/amp-pwa-workbox