o fix typos in html docs

doc/html/authplugins.html

@@ -66,7 +66,7 @@ abbreviation for the type of authentication. We recommend, for example:</p>
 <li><b>none</b>&#151;A plugin that implements the API without providing any actual 
 authentication service.</li>
 <li><b>authd</b>&#151;Brett Chun's Linux authd.</li>
-<li><b>munged</b>&#151;LLNL's munge protocol.</li>
+<li><b>munge</b>&#151;LLNL's munge protocol.</li>
 <li><b>krb5</b>&#151;Kerberos 5</li>
 </ul>
 <p>The <span class="commandline">plugin_name</span> and <span class="commandline">plugin_version</span> 

doc/html/quickstart_admin.html

@@ -193,7 +193,7 @@ Munge should be installed in order to get properly authenticated communications.
 The configure script in the top-level directory of this distribution will determine 
 which authentication plugins may be built. The configuration file specifies which 
 of the available plugins will be utilized. </p>
-<p>A Portable Authentication Manager (PAM) module is available for SLURM that 
+<p>A PAM module (Pluggable Authentication Module) is available for SLURM that 
 can prevent a user from accessing a node which he has not been allocated, if that 
 mode of operation is desired.</p>
 <p class="footer"><a href="#top">top</a></p>