docs: fix License url

[popomore]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

[mention-bot]

@popomore, thanks for your PR! By analyzing the history of the files in this pull request, we identified @dead-horse and @atian25 to be potential reviewers.

[codecov]

Codecov Report

Merging #9 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master     #9   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           4      4           
  Lines          17     17           
=====================================
  Hits           17     17

---

Continue to review full report at Codecov.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #9 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master     #9   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           4      4           
  Lines          17     17           
=====================================
  Hits           17     17

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4f713d7...cc7fa09. Read the comment docs.

[popomore]

eggjs/egg#989

[popomore]

• [email protected]