htable: added 'dbmode' attribute to module documentation

modules_k/htable/README

@@ -264,6 +264,10 @@ if(is_present_hf("Authorization"))
        expire.
      * dbtable - name of database to be loaded at startup in hash table.
        If empty or missing, no data will be loaded.
+     * dbmode - if set to 1, the content of hash table is written to
+       database table when the SIP server is stopped (i.e., ensure
+       persistency over restarts). Default value is 0 (no write back to db
+       table).
 
    Default value is NULL.
 

modules_k/htable/doc/htable_admin.xml

@@ -253,6 +253,14 @@ if(is_present_hf("Authorization"))
 			startup in hash table. If empty or missing, no data will be loaded.
 		</para>
 		</listitem>
+		<listitem>
+		<para>
+			<emphasis>dbmode</emphasis> - if set to 1, the content of hash
+			table is written to database table when the SIP server is stopped
+			(i.e., ensure persistency over restarts). Default value is 0 (no
+			write back to db table).
+		</para>
+		</listitem>
 		</itemizedlist>
 		<para>
 		<emphasis>