chore: add solution link in readme

[zhu-xiaowei]

Description

1. add solution link in readme.

General Checklist

• Added new tests to cover change, if needed
• Build succeeds using Swift Package Manager
• All unit tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (ba2e4b5) 94.54% compared to head (952142c) 94.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #22   +/-   ##
=======================================
  Coverage   94.54%   94.54%           
=======================================
  Files          33       33           
  Lines        1686     1686           
=======================================
  Hits         1594     1594           
  Misses         92       92           

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