chore: note that this is "one of" the solutions not "the one"

docs/2-advanced/09-accessibility.md

@@ -65,9 +65,10 @@ For more information regarding the available themes and how to use them, see the
 
 ### Theme Selection According to OS Settings
 
-
 The UI5 Web Components framework does not offer a built-in mechanism for selecting themes based on the users' OS settings. However, we recommend using standard APIs to implement OS-based theme selection in applications built with UI5 Web Components.
 
+In the next sections, we will demonstrate one of the possible approaches to detect and apply a theme that aligns with the user's OS preferences. However, you are free to explore and develop your own detection and matching algorithm.
+
 #### Light | Dark
 
 To synchronize theme switching with the OS's light or dark mode, you can use the [prefers-color-scheme](https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme) CSS Media feature, as shown in the next example: