Adding new entry in the contributors list

[mmromero]

I added myself as contributor after reporting issue #2435 and PR #2460

Pull-request guidelines (Remove this section after reading):

1. If you would like to list yourself as a Nipype contributor and your name is not mentioned please modify .zenodo.json file.
2. By submitting this request you acknowledge that your contributions are available under the Apache 2 license.
3. Use a descriptive prefix for your PR: ENH (enhancement), FIX, TST, DOC, STY, REF (refactor), WIP (Work in progress)
4. The person who accepts/merges your PR will include an update to the CHANGES file: prefix: description (URL of pull request)
5. Run make check-before-commit before submitting the PR.

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Fixes # .

Changes proposed in this pull request

[codecov-io]

Codecov Report

Merging #2465 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2465      +/-   ##
==========================================
+ Coverage   66.66%   66.67%   +<.01%     
==========================================
  Files         328      328              
  Lines       42551    42551              
  Branches     5276     5276              
==========================================
+ Hits        28366    28370       +4     
+ Misses      13505    13501       -4     
  Partials      680      680

Flag	Coverage Δ
#smoketests	50.76% <ø> (ø)	⬆️
#unittests	63.99% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
nipype/pipeline/plugins/multiproc.py	82.14% <0%> (+2.38%)	⬆️

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