corex: docs for rpc command shm.stats

src/modules/corex/doc/corex_admin.xml

@@ -982,6 +982,20 @@ event_route[dispatcher:dst-down] {
         <programlisting  format="linespecific">
 		&kamcli; rpc shm.info
 		</programlisting>
+    </section>
+	<section id="corex.rpc.shm.stats">
+		<title>
+		<function moreinfo="none">corex.shm.stats</function>
+		</title>
+		<para>
+			Return shared memory statistics (values are in bytes).
+		</para>
+		<para>
+		Example:
+		</para>
+        <programlisting  format="linespecific">
+		&kamcli; rpc shm.stats
+		</programlisting>
     </section>
     </section>