Fix typos

Author: DimitriPapadopoulos

doc/ChangeLog

@@ -30,7 +30,7 @@ FreeRADIUS-client 1.1.7, January 19, 2015
   o Clean up generation of random numbers.
     Patch from Nikos Mavrogiannopoulos.
   o Update BSD license as permitted by Christos Zoulas.
-  o Define PW_MAX_MSG_SIZE for maximum message sice.
+  o Define PW_MAX_MSG_SIZE for maximum message size.
     Patch from Nikos Mavrogiannopoulos.
   o Allow the dictionary file parser to understand
     BEGIN-VENDOR / END-VENDOR as with FreeRADIUS server.

doc/instop.html

@@ -25,7 +25,7 @@ <h2>
 <li><a href="#introduction">Introduction</a>
 <li><a href="#principles">Principles of operation</a>
 <li><a href="#installation">Installation</a>
-<li><a href="#availability">Availabiliy</a>
+<li><a href="#availability">Availability</a>
 <li><a href="#credits">Credits</a>
 <li><a href="#copyright">Copyright</a>
 <li><a href="#contacting">Contacting the author</a>
@@ -217,7 +217,7 @@ <h2>
 </a>
 </h2>
 
-	This program is avaiable from <a href="https://freeradius.org/sub_projects/">.
+	This program is available from <a href="https://freeradius.org/sub_projects/">.
 	<br>
 	Download the version with the largest version number, older version are
 	only kept for reference.