Fix typos in documentation

[sky-coderay]

Description

This PR introduces fixes for typos in documentation files:

1. First Commit:

   • File: spec.md
   • Change: Fixed the typo transcation to transaction.
   • Importance: Ensures accuracy and clarity in describing transaction-related processes.

2. Second Commit:

   • File: README.md
   • Change: Fixed the typo separate to separated.
   • Importance: Maintains consistency in terminology and avoids confusion in the explanation.

These changes improve documentation accuracy and clarity, which is essential for better understanding and avoiding potential misinterpretations by developers.

---

PR checklist

• Tests written/updated (N/A for documentation-only updates)
• Changelog entry added in .changelog (we use unclog to manage our changelog)
• Updated relevant documentation (docs/ or spec/) and code comments

[gitpoap-bot]

Congrats, your important contribution to this open-source project has earned you a GitPOAP!

GitPOAP: 2024 Celestia Contributor:

Head to gitpoap.io & connect your GitHub account to mint!

Learn more about GitPOAPs here.