Change customdata link from seller to product

[Rotheem]

Description

Please explain the changes you made here.

Checklist

• [ ] Created tests which fail without the change (if possible)
• [ ] All tests passing
• [ ] Extended the documentation, if necessary

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 63.63636% with 12 lines in your changes missing coverage. Please review.

Project coverage is 81.77%. Comparing base (51dc533) to head (180e2d9). Report is 2 commits behind head on main.

Files	Patch %	Lines
app/modules/cdr/endpoints_cdr.py	62.96%	10 Missing :warning:
app/modules/cdr/cruds_cdr.py	33.33%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #537 +/- ## ========================================== - Coverage 81.81% 81.77% -0.05% ========================================== Files 125 125 Lines 9469 9485 +16 ========================================== + Hits 7747 7756 +9 - Misses 1722 1729 +7 ```

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