Fixed a typo rad -> read

doc/cvs.html

@@ -103,7 +103,7 @@ <h3>2. Using CVS on Windows</h3>
         <strong>User name</strong>: <font color="#990000">myusername</font><br>
         <strong>CVSROOT</strong>: <font color="#990000">myusername</font>@cvs.moodle.sourceforge.net:/cvsroot/moodle</p>
       <p>[Globals]<br>
-        <strong>Checkout rad-only</strong>: uncheck<br>
+        <strong>Checkout read-only</strong>: uncheck<br>
         <strong>Supply control when adding files</strong>: check<br>
         <strong>Quiet mode</strong>: uncheck<br>
         <strong>TCP/IP compression</strong>: check and select 9<br>