Update language test en.json

about.powered_by: add "...media platform..."

app/javascript/mastodon/features/about/index.jsx

@@ -120,7 +120,7 @@ class About extends PureComponent {
           <div className='about__header'>
             <ServerHeroImage blurhash={server.getIn(['thumbnail', 'blurhash'])} src={server.getIn(['thumbnail', 'url'])} srcSet={server.getIn(['thumbnail', 'versions'])?.map((value, key) => `${value} ${key.replace('@', '')}`).join(', ')} className='about__header__hero' />
             <h1>{isLoading ? <Skeleton width='10ch' /> : server.get('domain')}</h1>
-            <p><FormattedMessage id='about.powered_by' defaultMessage='Decentralized social media powered by {mastodon}' values={{ mastodon: <a href='https://joinmastodon.org' className='about__mail' target='_blank'>Mastodon</a> }} /></p>
+            <p><FormattedMessage id='about.powered_by' defaultMessage='Decentralized social media platform powered by {mastodon}' values={{ mastodon: <a href='https://joinmastodon.org' className='about__mail' target='_blank'>Mastodon</a> }} /></p>
           </div>
 
           <div className='about__meta'>

app/javascript/mastodon/locales/en.json

@@ -9,7 +9,7 @@
   "about.domain_blocks.suspended.explanation": "No data from this server will be processed, stored or exchanged, making any interaction or communication with users from this server impossible.",
   "about.domain_blocks.suspended.title": "Suspended",
   "about.not_available": "This information has not been made available on this server.",
-  "about.powered_by": "Decentralized social media powered by {mastodon}",
+  "about.powered_by": "Decentralized social media platform powered by {mastodon}",
   "about.rules": "Server rules",
   "account.account_note_header": "Note",
   "account.add_or_remove_from_list": "Add or Remove from lists",