update multiplayer landing page

we're no longer in beta!!

client/multiplayer/index.html

@@ -48,8 +48,9 @@
     <div class="container-fluid mt-1 mt-lg-3 px-xxl-5">
         <div class="row">
             <div class="col-10 d-block mx-auto">
-                <p class="lead">Multiplayer is currently <b>in beta.</b> Please open a new issue (link below) if there are any bugs or errors.</p>
-                <p><a href="https://github.com/geoffrey-wu/qb-packet-reader/issues?q=is%3Aopen+is%3Aissue+label%3AMultiplayer">List of known bugs and planned features</a></p>
+                <p class="lead">Play quizbowl real-time against other players.</p>
+                <p>You can invite friends to join you by sharing the URL to your room.</p>
+                <p><a href="https://github.com/geoffrey-wu/qb-packet-reader/issues?q=is%3Aopen+is%3Aissue+label%3AMultiplayer">List of planned features</a></p>
                 <p>Create/Join a Room:</p>
                 <form id="form">
                     <div class="input-group">