cherry-pick(#28276): docs(trace-viewer): fix <details><summary> syntax (

#28297)

This PR cherry-picks the following commits:

- e405c1d

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

docs/src/trace-viewer-intro-csharp-java-python.md

@@ -28,8 +28,8 @@ Options for tracing are:
 
 This will record the trace and place it into the file named `trace.zip` in your `test-results` directory.
 
-<details><summary>If you are not using Pytest, click here to learn how to record traces.
-</summary>
+<details>
+<summary>If you are not using Pytest, click here to learn how to record traces.</summary>
 
 ```python async
 browser = await chromium.launch()

docs/src/trace-viewer.md

@@ -177,8 +177,8 @@ Options for tracing are:
 
 This will record the trace and place it into the file named `trace.zip` in your `test-results` directory.
 
-<details><summary>If you are not using Pytest, click here to learn how to record traces.
-</summary>
+<details>
+<summary>If you are not using Pytest, click here to learn how to record traces.</summary>
 
 ```python async
 browser = await chromium.launch()