Fix scrolltobottom button aria label

Signed-off-by: Marco Ambrosini <marcoambrosini@pm.me>

src/components/MessagesList/MessagesList.vue

@@ -53,6 +53,7 @@ get the messagesList array and loop through the list to generate the messages.
 		</template>
 		<transition name="fade">
 			<button v-show="!isScrolledToBottom"
+				:aria-label="scrollTobottomAriaLabel"
 				class="scroll-to-bottom"
 				@click="scrollToBottom">
 				<ChevronDown decorative
@@ -211,6 +212,10 @@ export default {
 		chatIdentifier() {
 			return this.token + ':' + this.isParticipant + ':' + this.isInLobby
 		},
+
+		scrollToBottomAriaLabel() {
+			return t('spreed', 'Scroll to bottom')
+		},
 	},
 
 	watch: {