:recycle: default to large yt thumb | deleted some commented out code

vue-theme/src/components/hero.vue

             .hero--image--overlay.w-max.f-col
                 h2.t-up.t-cntr(v-if="heroText") {{ heroText }}
             img.w-max(:src="getThumbnailFromYt(showHero)" alt="hero alt image")
-            //- button(v-if="showPlaybutton" @click="isPlaying = true") play
             button(v-if="showPlaybutton" @click="isPlaying = true")
+
     .hero--image.w-max(v-else-if="heroType === 'image'")
         .hero--image--overlay.w-max.f-col
             h2.t-up.t-cntr(v-html="heroText")
         img.w-max(:src="showHero" alt="hero alt image")
+
     .hero--image(v-else)
         .hero--image--overlay.w-max.f-col
             div(v-html="heroText")
             this.heroHeight = this.$el.offsetWidth / 1.8
         },
         getThumbnailFromYt(url) {
-            return ytThumbnail(url, 'max')
+            return ytThumbnail(url, 'large')
         }
     },
     mounted() {