docs: standardize .. code-block directive usage

[mdrxy]

and fix typos

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
langchain	Ready	Preview	Comment	Sep 25, 2025 8:50pm

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #33122 will not alter performance

_{Comparing mdrxy/std-directive-codeblock (30eb49a) with master (eaf8dce)¹}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 13 untouched

Footnotes

1. No successful run was found on master (c3fed20) during the generation of this report, so eaf8dce was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #33122 will not alter performance

_{Comparing mdrxy/std-directive-codeblock (30eb49a) with master (6d418ba)¹}

Summary

✅ 10 untouched
⏩ 11 skipped²

Footnotes

1. No successful run was found on master (c3fed20) during the generation of this report, so 6d418ba was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

2. 11 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩