SELinux customize:  Improve documentation.

/dev/zero not /dev/0.
Fix Available controls table to use the correct terms (class, permission),
not (domain, capability).

Change-Id: Ic577182226a42ad4be9405393f63e729c3024d1f
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/src/devices/tech/security/selinux/customize.jd b/src/devices/tech/security/selinux/customize.jd
index 79ca5d6..592b9b4 100644
--- a/src/devices/tech/security/selinux/customize.jd
+++ b/src/devices/tech/security/selinux/customize.jd
@@ -100,7 +100,7 @@
 
 <p>First, note SELinux is based upon the <a href="https://www.gnu.org/software/m4/manual/index.html">M4</a> computer language and therefore supports a variety of macros to save time.</p>
 
-<p>In the following example, all domains are granted access to read or write to <code>/dev/null</code> and read from <code>/dev/0</code>.</p>
+<p>In the following example, all domains are granted access to read from or write to <code>/dev/null</code> and read from <code>/dev/zero</code>.</p>
 
 <pre>
 # Allow read / write access to /dev/null
@@ -181,10 +181,10 @@
 <table>
  <tr>
     <td>
-<p><strong>Domain</strong></p>
+<p><strong>Class</strong></p>
 </td>
     <td>
-<p><strong>Capability</strong></p>
+<p><strong>Permission</strong></p>
 </td>
  </tr>
  <tr>