Merge pull request OpenSIPS#664 from wdoekes/wjd-allow_unset_dlg_in_req_route

dialog: Document that unset_dlg_profile can be used from request_route.
(cherry picked from commit 8d23d9b)

Author: bogdan-iancu

modules/dialog/README

@@ -1084,8 +1084,8 @@ set_dlg_profile("caller","$fu");
        the dialog to the profile - note that the profile must
        support values. Pseudo-variables are supported.
 
-   This function can be used from BRANCH_ROUTE, REPLY_ROUTE and
-   FAILURE_ROUTE.
+   This function can be used from REQUEST_ROUTE, BRANCH_ROUTE,
+   REPLY_ROUTE and FAILURE_ROUTE.
 
    Example 1.52. unset_dlg_profile usage
 ...

modules/dialog/doc/dialog_admin.xml

@@ -1466,7 +1466,7 @@ set_dlg_profile("caller","$fu");
 		</listitem>
 		</itemizedlist>
 		<para>
-		This function can be used from BRANCH_ROUTE,
+		This function can be used from REQUEST_ROUTE, BRANCH_ROUTE,
 			REPLY_ROUTE and FAILURE_ROUTE.
 		</para>
 		<example>