Fixed TaskDoc for vasp_ml MD calculations.

[davidwaroquiers]

This PR solves a problem for calculations with Vasp ML. Indeed, the number of ionic_steps from the vasprun is not taking into account the steps performed with the ML model.

Contributor Checklist

• I have run the tests locally and they passed.
• I have added tests, or extended existing tests, to cover any new features or bugs fixed in this PR

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (d0276a1) 90.15% compared to head (e23613f) 88.90%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
emmet-core/emmet/core/vasp/calculation.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #939      +/-   ##
==========================================
- Coverage   90.15%   88.90%   -1.26%     
==========================================
  Files         138      109      -29     
  Lines       13159    10086    -3073     
==========================================
- Hits        11864     8967    -2897     
+ Misses       1295     1119     -176     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.