break out minetest and mumble install instructions

diff --git a/2021/registered/chill/index.html b/2021/registered/chill/index.html
index 387ab66b8ff45b991dac99d3e1fe8d0648a0e228..b01e47883cb9b3d35ee60fe49ce4a310c8a5cbd3 100755 (executable)
--- a/2021/registered/chill/index.html
+++ b/2021/registered/chill/index.html
@@ -98,8 +98,9 @@ John Hsieh (FSF deputy director). The quiz is scheduled for Sunday the
 <p>We're running a <a href="https://www.minetest.net/">Minetest</a> game server
 this year. Minetest is a classic and fun free software game in which players
 build with blocks, and craft items. To install Minetest
-<code>0.4</code> on Trisquel, run <strong><code>sudo apt-get install
-minetest</code></strong>.</p>
+<code>0.4</code> on Trisquel, run:</p>
+
+<pre>sudo apt-get install minetest</pre>
 
 <p>To connect to our server, use the <code>minetest.libreplanet.org</code> URL
   and the default port <code>30000</code>.
@@ -108,10 +109,14 @@ minetest</code></strong>.</p>
 
 <a name="voicechat"><h3>Voice chat</h3></a>
 
-<p>Install the <strong><code>mumble</code></strong> package with a command like
-<strong><code>sudo apt-get install mumble</code></strong> Start the Mumble
-application, and log into <code><strong>mumble.fsf.org</code></strong>.
-Exhibitor' room names are listed above.
+<p>Install the <strong><code>mumble</code></strong> package with a command
+like:</p>
+
+<pre>sudo apt-get install mumble</pre>
+
+<p>Start the Mumble application, and log into
+<strong><code>mumble.fsf.org</code></strong>.  Exhibitor' room names are listed
+above.
 
 <hr>