updating the help file

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@9438 71c3de6d-444a-0410-be80-ed276b4c234a

war/resources/help/system-config/master-slave/availability.html

@@ -13,7 +13,7 @@
             Hudson will not take the slave off-line.
         </dd>
 
-        <dt><b>
+        <!--dt><b>
             Take this slave on-line and off-line at specific times
         </b></dt>
         <dd>
@@ -23,10 +23,10 @@
 
             During an off-line window, the slave will only be taken off-line if there are no active
             jobs running on the slave.
-        </dd>
+        </dd-->
 
         <dt><b>
-            Take this slave on-line and off-line as needed
+            Take this slave on-line when in demand and off-line when idle
         </b></dt>
         <dd>
             In this mode, if Hudson can start the slave without user assistance, it will periodically