fix: remove duplicate 'a' in Chapar entry description

[chenlichao]

Summary

Fixes a small duplicate-word typo in the existing Chapar entry description in README.md: Chapar is a a cross-platform → Chapar is a cross-platform.

Entry Links

Forge link: https://github.com/chapar-rest/chapar
pkg.go.dev: https://pkg.go.dev/github.com/chapar-rest/chapar
goreportcard.com: https://goreportcard.com/report/github.com/chapar-rest/chapar
Coverage: https://app.codecov.io/gh/chapar-rest/chapar

Change

• File: README.md
• One duplicate word removed (a a → a).
• No entry added, removed, reordered, or relinked. Only an existing description typo is corrected.

Verification

• Verified the entry links above are reachable.
• git diff --check — clean (no whitespace errors).
• Diff is a single 1-line change.

Notes

• Intentionally tiny change: correcting a typo in an existing entry's description.
• The entry's link text, URL, and alphabetical position are unchanged.
• Per CONTRIBUTING.md: one PR changes only one item — this PR touches only the Chapar entry.

[github-actions]

Automated Quality Checks

Required checks

✅ Repo: accessible, has go.mod and SemVer release
✅ pkg.go.dev: OK
✅ Go Report Card: OK (grade unknown)

Additional checks

✅ License: BSD-3-Clause
✅ Maturity: repo has 5+ months of history
✅ CI/CD: GitHub Actions workflows detected
✅ README: present
✅ Coverage: link accessible

These checks are automated and do not replace maintainer review. See CONTRIBUTING.md for full guidelines.

---

PR Diff Validation

Content checks

✅ Files changed: only README.md
✅ Link consistency: README link matches forge link in PR body
✅ Link text: matches repository name
✅ Description: ends with punctuation
✅ Description tone: no promotional language detected
✅ Category size: Other Software has 79 items

Warnings

⚠️ Changes: 1 added + 1 removed (update or move — please confirm in PR description)

Automated diff validation — does not replace maintainer review.

[m89sbyw4tk-glitch]

H

[chenlichao]

Updated the PR body with the existing Chapar entry links requested by the automated quality check. This remains a typo-only README correction; no entry link or ordering changed.