change "finish tutorial" text to "finish toot-orial" (#9905)

app/javascript/mastodon/features/introduction/index.js

@@ -89,7 +89,7 @@ const FrameInteractions = ({ onNext }) => (
     </div>
 
     <div className='introduction__action'>
-      <button className='button' onClick={onNext}><FormattedMessage id='introduction.interactions.action' defaultMessage='Finish tutorial!' /></button>
+      <button className='button' onClick={onNext}><FormattedMessage id='introduction.interactions.action' defaultMessage='Finish toot-orial!' /></button>
     </div>
   </div>
 );

app/javascript/mastodon/locales/defaultMessages.json

@@ -1457,7 +1457,7 @@
         "id": "introduction.interactions.favourite.text"
       },
       {
-        "defaultMessage": "Finish tutorial!",
+        "defaultMessage": "Finish toot-orial!",
         "id": "introduction.interactions.action"
       }
     ],