Revise launchpad navigation example in documentation

Updated code example for launchpad navigation in documentation.

Author: oblomov-dev

docs/development/navigation/navigation.md

@@ -52,14 +52,14 @@ Sound familiar? The abap2UI5 framework emulates the classic `call screen` and `l
 #### Launchpad
 We recommend using backend communication exclusively for view changes or popup calls. If you're using a launchpad, consider navigating through the launchpad to utilize browser navigation and history. Here's an example:
 ```abap
-client->follow_up_action( client->_event_client(
+client->_event_client(
     val   = client->cs_event-cross_app_nav_to_ext
     t_arg = VALUE #( (
         `{ semanticObject: "Z2UI5_CL_LP_SAMPLE_04",  action: "display" }`
-    ) ) ) ).
+    ) ) ).
 ```
 To learn more about launchpads and routing, refer to the documentation [here.](/configuration/launchpad)
 
 ### Inner App Navigation
 
-Coming Soon... (PRs welcome)
+Coming Soon... (PRs welcome)