…mporalio#852)

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## What was changed
The ASCII warning blocks were rendering incorrectly on the docs site.
The fix is to add backticks around these blocks. It looks like the
format will still be ok in the CLI `--help` messages, they will just be
bolded like some of the commands in the `--help` results.

Without fix:
<img width="1986" height="868" alt="image"
src="https://github.com/user-attachments/assets/96a4a030-0686-434a-80fa-da378131883a"
/>

With fix:
<img width="946" height="325" alt="Screenshot 2025-09-04 at 10 40 05"
src="https://github.com/user-attachments/assets/97ffda9d-63bf-4ed0-86f3-bea1cdea3283"
/>

## Why?
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## Checklist
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1. Closes <!-- add issue number here -->

2. How was this tested:
<!--- Please describe how you tested your changes/how we can test them
-->

3. Any docs updates needed?
<!--- update README if applicable
      or point out where to update docs.temporal.io -->