Small fix to diagrams

[edwintorres]

Description

This PR fix the diagrams. The fix is a change to the url for the preview.

• data_flow.pml
• ci-cd.puml

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.17%. Comparing base (e483156) to head (fe812ec).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1783 +/- ## ======================================= Coverage 94.17% 94.17% ======================================= Files 66 66 Lines 4170 4170 ======================================= Hits 3927 3927 Misses 243 243 ```

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