<user> accepted YOUR invitation -> <user> accepted THEIR invitation [ci skip]

src/metabase/email/user_joined_notification.mustache

@@ -4,7 +4,7 @@
       <h2 style="font-weight: normal; color: #4C545B;line-height: 1.65rem;">
         {{joinedUserName}}
         {{#joinedViaSSO}}created a Metabase account.{{/joinedViaSSO}}
-        {{^joinedViaSSO}}accepted your Metabase invitation.{{/joinedViaSSO}}
+        {{^joinedViaSSO}}accepted their Metabase invitation.{{/joinedViaSSO}}
       </h2>
       <h4 style="font-weight: normal;">
         <a style="color: #4A90E2; text-decoration: none;" href="mailto:{{adminEmail}}">