chore: add license link

[caicancai]

Purpose of the PR

• close #xxx

Main Changes

Verifying these changes

• Trivial rework / code cleanup without any test coverage. (No Need)
• Already covered by existing tests, such as (please modify tests here).
• Need tests and can be verified as follows:
  • xxx

Does this PR potentially affect the following parts?

• Nope
• Dependencies (add/update license info)
• Modify configurations
• The public API
• Other affects (typed here)

Documentation Status

• Doc - TODO
• Doc - Done
• Doc - No Need

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7635c67) 65.59% compared to head (6da182f) 66.25%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2398      +/-   ##
============================================
+ Coverage     65.59%   66.25%   +0.65%     
- Complexity      587      828     +241     
============================================
  Files           511      511              
  Lines         42590    42590              
  Branches       5941     5941              
============================================
+ Hits          27936    28216     +280     
+ Misses        11840    11559     -281     
- Partials       2814     2815       +1     

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[imbajin]

Thanks~ Welcome to the Apache HugeGraph Community~

[caicancai]

@imbajin Good to merge?