docs: highlight underscores as code block (#1493)

**Issue number:**
N/A
### PR Type

**What kind of change does this PR introduce?**
* [ ] Feature
* [ ] Bug Fix
* [ ] Refactoring (no functional or API changes)
* [ ] Documentation Update
* [x] Maintenance (dependency updates, CI, etc.)

## Summary
Configuration for documentation lint.
### Changes

Please provide a summary of the changes.
use asterisk as bold sign
### User experience

Please describe the user experience before and after this change.
Screenshots are welcome for additional context.
N/A
## Checklist

If an item doesn't apply to your changes, leave it unchecked.

* [x] I have performed a self-review of this change according to the
[development
guidelines](https://splunk.github.io/addonfactory-ucc-generator/contributing/#development-guidelines)
* [x] Tests have been added/modified to cover the changes [(testing
doc)](https://splunk.github.io/addonfactory-ucc-generator/contributing/#build-and-test)
* [ ] Changes are documented
* [x] PR title and description follows the [contributing
principles](https://splunk.github.io/addonfactory-ucc-generator/contributing/#pull-requests)

docs/CHANGELOG.md

@@ -15,7 +15,7 @@
 
 * add license during init command ([#1475](https://github.com/splunk/addonfactory-ucc-generator/issues/1475)) ([471294a](https://github.com/splunk/addonfactory-ucc-generator/commit/471294ae8e4c266a2f685aa4c01eb75fd1974db1))
 * confirmation modal when activate/deactivate single input ([#1421](https://github.com/splunk/addonfactory-ucc-generator/issues/1421)) ([34c8ec2](https://github.com/splunk/addonfactory-ucc-generator/commit/34c8ec250861eb06bd1cd4b22b430e5aa7e26a7c))
-* do not create __pycache__ in lib dir ([#1469](https://github.com/splunk/addonfactory-ucc-generator/issues/1469)) ([ad58e50](https://github.com/splunk/addonfactory-ucc-generator/commit/ad58e50ca2b5588f6824a4da95a15e8c0857f032))
+* do not create `__pycache__` in lib dir ([#1469](https://github.com/splunk/addonfactory-ucc-generator/issues/1469)) ([ad58e50](https://github.com/splunk/addonfactory-ucc-generator/commit/ad58e50ca2b5588f6824a4da95a15e8c0857f032))
 * **inputs:** show input services status count ([#1430](https://github.com/splunk/addonfactory-ucc-generator/issues/1430)) ([2574451](https://github.com/splunk/addonfactory-ucc-generator/commit/257445159898a2207cdf7a397345c218678c8fcb))
 
 ## [5.53.2](https://github.com/splunk/addonfactory-ucc-generator/compare/v5.53.1...v5.53.2) (2024-11-21)