fix up the xml

refpolicy/policy/modules/system/hostname.if

@@ -1,12 +1,11 @@
 ## <summary>Policy for changing the system host name.</summary>
 
 ########################################
-## <desc>
+## <summary>
 ##	Execute hostname in the hostname domain.
-## </desc>
+## </summary>
 ## <param name="domain">
 ##	The type of the process performing this action.
-##	Has a sigchld signal backchannel.
 ## </param>
 #
 interface(`hostname_domtrans',`
@@ -27,11 +26,10 @@ interface(`hostname_domtrans',`
 ')
 
 ########################################
-## <desc>
+## <summary>
 ##	Execute hostname in the hostname domain, and
 ##	allow the specified role the hostname domain.
-##	Has a sigchld signal backchannel.
-## </desc>
+## </summary>
 ## <param name="domain">
 ##	The type of the process performing this action.
 ## </param>
@@ -54,10 +52,9 @@ interface(`hostname_run',`
 ')
 
 ########################################
-##     <desc>
-##             Execute hostname in the hostname domain, and
-##             Has a sigchld signal backchannel.
-##     </desc>
+##     <summary>
+##             Execute hostname in the caller domain.
+##     </summary>
 ##     <param name="domain">
 ##             The type of the process performing this action.
 ##     </param>
@@ -69,4 +66,3 @@ interface(`hostname_exec',`
 
 	can_exec($1,hostname_exec_t)
 ')
-