chore: Fix badge to direct to diffpy.srxplanar

[stevenhua0320]

@sbillinge ready to review

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (7b9a5ea) to head (8eb1438).
⚠️ Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #46   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines           48        48           
=========================================
  Hits            48        48           

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[sbillinge]

Thanks for fixing that @stevenhua0320 . I pushed out the full release. Please can you work on the conda-forge meta.yaml now. THanks.