docs(session-replay): Add AI summary segment markers to player documentation (#15921)

Add new numbered item documenting the colored segment markers feature
(green = success, red = failure) on the player timeline from PR #51925.
Renumber subsequent items accordingly.

Co-authored-by: inkeep[bot] <257615677+inkeep[bot]@users.noreply.github.com>

Author: inkeep[bot]

contents/docs/session-replay/how-to-watch-recordings.mdx

@@ -43,21 +43,23 @@ To watch recordings, you can visit the [Replay](https://us.posthog.com/replay) p
 
 8. Play, pause, and seek through the recording. Hold `alt` to switch the seek buttons to seek in 1 millisecond steps
 
-9. Switch the timestamp view between "relative" (seconds in recording), UTC, and project timezone
+9. View AI summary segment markers on the player timeline as colored overlays – green for successful outcomes, red for failures. Click a marker to jump to that moment, or click a segment in the AI summary sidebar to navigate the player.
 
-10. Add comments by pressing **C** or clicking the **Comment** button to share your thoughts with your team
+10. Switch the timestamp view between "relative" (seconds in recording), UTC, and project timezone
 
-11. Add emoji reactions by pressing **e** or clicking the **emoji quick reaction** button
+11. Add comments by pressing **C** or clicking the **Comment** button to share your thoughts with your team
 
-12. Take a screenshot by pressing **s** or clcking the **screenshot** button
+12. Add emoji reactions by pressing **e** or clicking the **emoji quick reaction** button
 
-13. Create a short gif clip around the current timestamp by pressing **x** or the **clip** button
+13. Take a screenshot by pressing **s** or clcking the **screenshot** button
 
-14. Skip to the next recording in a playlist or collection by pressing **n** or the **play next** button
+14. Create a short gif clip around the current timestamp by pressing **x** or the **clip** button
 
-15. Enter cinema mode to focus on the recording by pressing **t** or clicking the cinema mode button
+15. Skip to the next recording in a playlist or collection by pressing **n** or the **play next** button
 
-16. Enter fullscreen mode by pressing **f** or clicking the fullscreen button
+16. Enter cinema mode to focus on the recording by pressing **t** or clicking the cinema mode button
+
+17. Enter fullscreen mode by pressing **f** or clicking the fullscreen button
 
 <ProductScreenshot
   imageLight="https://res.cloudinary.com/dmukukwp6/image/upload/w_1000,c_limit,q_auto,f_auto/light_player_annotated_b298e2b90e.png"