Standardize admonition types and fix formatting across documentation

[yomybaby]

Why This Work is Needed

The documentation currently uses inconsistent admonition types (:::info) that don't align with the documentation style guide. Additionally, ASCII diagrams have alignment issues that affect readability in PDF exports. Standardizing these elements improves documentation consistency and professional appearance across all language versions.

Expected Outcomes

• All Korean documentation uses :::note admonitions consistently with the style guide
• ASCII diagrams in model_serving.md are properly aligned across all languages
• Numbered lists use correct Markdown syntax
• Documentation maintains consistent formatting standards for better maintainability

JIRA Issue: FR-2075