improve user exit

docs/advanced/extensibility/user_exits.md

@@ -1,5 +1,9 @@
-abap2UI5 contains predefined predefined user exits which can be used to modify the standard behaviour. The user exits are exposed by the interface `Z2UI5_IF_EXIT`. To use them in your system you have to create a new class which implements the interface and its methods. They're called dynamically by abap2UI5 class `Z2UI5_CL_EXIT`. You should **not** include your class into abap2UI5 packages but in any other custom package.
+# User Exits
 
-These are the available methods:
-- `GET_DRAFT_EXP_TIME_IN_HOURS`: You can override the default 4 hour abap2UI5 draft session timeout
-- `ADJUST_CONFIG`: You can change abap2UI5 startup parameters like theme or UI5 version
+abap2UI5 contains predefined predefined user exits which can be used to modify the standard behaviour. The user exits are exposed by the interface [`Z2UI5_IF_EXIT`](https://github.com/abap2UI5/abap2UI5/blob/main/src/02/z2ui5_if_exit.intf.abap). To use them in your system you have to create a new class which implements the interface and its methods. They're called dynamically by abap2UI5 class [`Z2UI5_CL_EXIT`](https://github.com/abap2UI5/abap2UI5/blob/main/src/02/z2ui5_cl_exit.clas.abap). You should **not** include your class into abap2UI5 packages but in any other custom package.
+
+### `GET_DRAFT_EXP_TIME_IN_HOURS` 
+You can override the default 4 hour abap2UI5 draft session timeout
+
+### `ADJUST_CONFIG` 
+You can change abap2UI5 startup parameters like theme or UI5 version