path: docs for sockname_mode param

src/modules/path/doc/path_admin.xml

@@ -197,6 +197,25 @@ modparam("path", "received_format", 1)
 ...
 modparam("path", "enable_r2", 1)
 ...
+</programlisting>
+		</example>
+	</section>
+	<section id="path.p.sockname_mode">
+		<title><varname>sockname_mode</varname> (int)</title>
+		<para>
+		If set to 1, the Path URI is built to contain socket name in 'sn' parameter.
+		</para>
+		<para>
+		<emphasis>
+			Default value is 0.
+		</emphasis>
+		</para>
+		<example>
+		<title>Set <varname>sockname_mode</varname> parameter</title>
+		<programlisting format="linespecific">
+...
+modparam("path", "sockname_mode", 1)
+...
 </programlisting>
 		</example>
 	</section>