Updates docs for apache_conf

* Uses the suggested `cmp` instead of `include`
* Adds the way to properly compare a list of multiple ports

Signed-off-by: Franklin Webber <franklin@chef.io>

docs/resources/apache_conf.md.erb

@@ -37,7 +37,13 @@ The following examples show how to use this InSpec audit resource.
 ### Test ports for SSL
 
     describe apache_conf do
-      its('Listen') { should include '443' }
+      its('Listen') { should cmp '443' }
+    end
+
+### Test multiple ports are listening
+
+    describe apache_conf do
+      its('Listen') { should =~ [ '80', '443' ] }
     end
 
 <br>
@@ -51,11 +57,11 @@ This InSpec audit resource matches any service that is listed in the Apache conf
 
 or:
 
-    its('Timeout') { should include '300' }
+    its('Timeout') { should cmp '300' }
 
 For example:
 
     describe apache_conf do
-      its('MaxClients') { should include '100' }
-      its('Listen') { should include '443' }
+      its('MaxClients') { should cmp '100' }
+      its('Listen') { should cmp '443' }
     end