refactor(tests): test-tabs-tab-bar-hidden scenario update (#3846)

Following suggestion from comments in #3844 I've change header formating
in existing scenario.

Author: LKuchno

apps/src/tests/single-feature-tests/tabs/test-tabs-tab-bar-hidden/scenario.md

@@ -1,14 +1,12 @@
-## Test Scenario: tabBarHidden
+# Test Scenario: tabBarHidden
 
 **E2E test:** No - to be automated
 
 ## Prerequisites
 - iOS 18+ device or simulator
 - Android emulator
 
----
-
-### Steps
+## Steps
 
 1. Launch the app and navigate to the screen Tab Bar Hidden.