dispatcher: small style fix in ds_probing_mode docs

(cherry picked from commit faccbb1cf62bfb625d0bcc9d1a52727dcdd962ff)

src/modules/dispatcher/doc/dispatcher_admin.xml

@@ -644,8 +644,8 @@ modparam("dispatcher", "force_dst", 1)
 			but you can skip some servers with flag 4 in destination list file, for example.</para>
 		</listitem>
 		<listitem>
-			<para>Value 2: if set to 2, only gateways in inactive state with
-			probing mode set are tested.</para>
+			<para>Value 2: if set to 2, only gateways in INACTIVE state with
+			PROBING mode set are tested.</para>
 		</listitem>
 		<listitem>
 			<para>Value 3: If set to 3, any gateway with state PROBING is continually probed