modules: coherent naming of Statistics section in docbook

- it is easier to generate alphabetic indexes

modules_k/dialog/doc/dialog_admin.xml

@@ -1572,7 +1572,7 @@ if(!uri == myself) {
 
 
 	<section>
-	<title>Exported statistics</title>
+	<title>Statistics</title>
 		<section>
 			<title><varname>active_dialogs</varname></title>
 			<para>

modules_k/imc/doc/imc_admin.xml

@@ -300,7 +300,7 @@ if(is_method("MESSAGE)
 
 
 	<section>
-	<title>Exported Statistics</title>
+	<title>Statistics</title>
 	<section>
 		<title>
 		<function moreinfo="none">active_rooms</function>
@@ -308,7 +308,6 @@ if(is_method("MESSAGE)
 		<para>
 		Number of active IM Conferencing rooms.
 		</para>
-		
 	</section>
 	</section>
 

modules_k/msilo/doc/msilo_admin.xml

@@ -728,7 +728,7 @@ m_dump("$fu");
 	</section>
 
 	<section>
-	<title>Exported Statistics</title>
+	<title>Statistics</title>
 	<section>
 		<title>stored_messages</title>
 		<para>

modules_k/nat_traversal/doc/nat_traversal_admin.xml

@@ -618,7 +618,7 @@ if ((method=="REGISTER" || method=="SUBSCRIBE" ||
   </section>
 
   <section>
-  <title>Exported statistics</title>
+  <title>Statistics</title>
     <section>
     <title><varname>keepalive_endpoints</varname></title>
       <para>

modules_k/qos/doc/qos_admin.xml

@@ -159,7 +159,7 @@ route {
 	</section>
 
 	<section>
-	<title>Exported Statistics</title>
+	<title>Statistics</title>
 	<para>There are no exported statistics for the qos module.</para>
 	</section>
 

modules_k/registrar/doc/registrar_admin.xml

@@ -986,7 +986,7 @@ reg_free_contacts("callee");
 	</section>
 
 <section>
-	<title>Exported Statistics</title>
+	<title>Statistics</title>
 	<section>
 		<title><varname>max_expires</varname></title>
 		<para>

modules_k/sst/doc/sst_admin.xml

@@ -376,7 +376,7 @@ route {
 
 
 	<section>
-	<title>Exported Statistics</title>
+	<title>Statistics</title>
 	<section>
 		<title><varname>expired_sst</varname></title>
 		<para>

modules_k/tmx/doc/tmx_admin.xml

@@ -484,7 +484,7 @@ tcontinue('123', '456', 'MYROUTE');
 
 
 	<section>
-		<title>Exported statistics</title>
+		<title>Statistics</title>
 		<para>
 		Exported statistics are listed in the next sections. All statistics
 		except <quote>inuse_transactions</quote> can be reset.

modules_k/usrloc/doc/usrloc_admin.xml

@@ -868,7 +868,7 @@ modparam("usrloc", "preload", "location")
 
 
 	<section>
-		<title>Exported statistics</title>
+		<title>Statistics</title>
 		<para>
 		Exported statistics are listed in the next sections.
 		</para>