Fix documentation typos and formatting issues

[Volgat]

• Fix typo: 'peak' -> 'peek' in docs/index.md
• Fix typo in image path: 'wihtout' -> 'without' in firebase.md
• Fix markdown admonition delimiter: '::::' -> ':::' in firebase.md
• Fix code block syntax: 'jsx' -> 'yaml' and 'bash' in pre-checks-publishing.md

These corrections improve documentation accuracy and ensure proper syntax highlighting for code examples.

Description

Summary

This PR fixes several typos and formatting issues found in the documentation to improve readability and accuracy.

Changes Made

• Grammar correction: Fixed typo peak → peek in docs/index.md:74
• Image path correction: Fixed typo in filename reference wihtout → without in docs/integrations/firebase.md:352
• Markdown syntax fix: Corrected admonition delimiter :::: → ::: in docs/integrations/firebase.md:211
• Code block syntax improvements: Updated incorrect language tags in docs/test-and-publish/publish/pre-checks-publishing.md:
  • Line 47: jsx → yaml (YAML configuration)
  • Line 88: jsx → bash (Dart CLI command)
  • Line 141: jsx → yaml (YAML configuration)

Impact

These corrections ensure:

• ✅ Proper syntax highlighting for code examples
• ✅ Correct image references
• ✅ Consistent Markdown formatting
• ✅ Better documentation accuracy for users

N/A -community contribution

Type of change

• Typo fix
• New feature
• Enhancement to current docs
• Removed outdated references
• Update assets

[pinkeshmars]

LGTM, just corrected actual image names as well!

[Volgat]

Hi @pinkeshmars
I noticed my commits in this PR are attributed to other instead of my GitHub account "Volgat".
My verified GitHub email is mikeamega@yahoo.fr.

Could you please reassociate the commits with my profile when you have a moment?

Thanks! 🙏