docs: add link for farewell

src/components/Footer.tsx

@@ -22,6 +22,9 @@ export function Footer(props: Props) {
       >
         {VERSION}
       </Link>
+      <Link href={wikiLinks.bye} target="_blank" rel="noopener noreferrer">
+        👋 About to say good bye.
+      </Link>
       <RoundIconButton
         aria-label={'settings'}
         icon={GearIcon}

src/components/settings/SettingsBar.tsx

@@ -23,6 +23,7 @@ export const wikiLinks = {
   copySnippet: `${WIKI_HOME_LINK}/Copy-file-and-snippet`,
   createAccessToken: `${WIKI_HOME_LINK}/Access-token-for-Gitako`,
   pjaxMode: `${WIKI_HOME_LINK}/Pjax-Mode`,
+  bye: `${WIKI_HOME_LINK}/About-to-say-good-bye`,
 }
 
 const moreFields: SimpleConfigField<'copySnippetButton' | 'codeFolding' | 'pjaxMode'>[] =