update links

packages/frontend/src/pages/about-sharkey.vue

@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<button v-if="thereIsTreasure" class="_button treasure" @click="getTreasure"><img src="/fluent-emoji/1f3c6.png" class="treasureImg"></button>
 				</div>
 				<div style="text-align: center;">
-					{{ i18n.ts._aboutMisskey.about }}<br><a href="https://misskey-hub.net/docs/misskey.html" target="_blank" class="_link">{{ i18n.ts.learnMore }}</a>
+					{{ i18n.ts._aboutMisskey.about }}<br><a href="https://joinsharkey.org/" target="_blank" class="_link">{{ i18n.ts.learnMore }}</a>
 				</div>
 				<div v-if="$i != null" style="text-align: center;">
 					<MkButton primary rounded inline @click="iLoveMisskey">I <Mfm text="$[jelly ❤]"/> #Sharkey</MkButton>