fixing typos across documentation

[vermarjun]

Changes

• Fixed 14 spelling errors across docs/, website/, CONTRIBUTING.md, and DEVELOPERS.md
• No logic or functionality changes, typo fixes only

Flags

• No breaking changes
• All fixes are isolated to documentation and markdown files

Screenshots or Video

N/A - documentation text changes only.

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to master from fork:branchname
• Manual accessibility test performed
  • Keyboard-only access, including forms
  • Contrast at least WCAG Level A
  • Appropriate labels, alt text, and instructions

[vermarjun]

@mttrbrts @sanketshevkar can you please review this. Fixes typos across documentation.

[Rahul-R79]

@vermarjun could you take a look at File: https://github.com/accordproject/techdocs/blob/main/AI_USAGE_POLICY.md

I noticed a small typo in the "Disclose AI usage" bullet point in the document.

In the sentence about pull requests, "descptions" should be corrected to "descriptions".

[vermarjun]

Thanks for pointing out, will add another commit covering that.