fix: Minor issues in README.md resolved

[1Maxnet1]

Summary:

• fix typo
• fix numbering in numerated list
• fix file link

Expected behavior:

The README

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• [X] Run the unit tests with mvn test to make sure you didn't break anything
• [X] Format the title like "feat: {new feature short description}" or "fix: {describe what was fixed}". Title must follow the Conventional Commit Specification (https://www.conventionalcommits.org/en/v1.0.0/).
• [X] Linked all relevant issues
• [X] Include screenshot(s) showing how this pull request works and fixes the issue(s)