Update misskey-js.api.md

etc/misskey-js.api.md

@@ -2423,6 +2423,14 @@ type UserLite = {
         name: string;
         url: string;
     }[];
+    instance?: {
+        name: Instance['name'];
+        softwareName: Instance['softwareName'];
+        softwareVersion: Instance['softwareVersion'];
+        iconUrl: Instance['iconUrl'];
+        faviconUrl: Instance['faviconUrl'];
+        themeColor: Instance['themeColor'];
+    };
 };
 
 // @public (undocumented)