Add OpenIndiana download

Author: mtelka

content/downloads/linux.html

@@ -45,7 +45,7 @@ <h3>FreeBSD</h3>
   <h3>Solaris 9/10/11 (<a href="https://www.opencsw.org">OpenCSW</a>)</h3>
   <code># pkgutil -i git</code>
 
-  <h3>Solaris 11 Express</h3>
+  <h3>Solaris 11 Express, OpenIndiana</h3>
   <code># pkg install developer/versioning/git</code>
 
   <h3>OpenBSD</h3>