Fix F522, F523, F524 flake errors: format calls

[santisoler]

Summary

Remove them from the ignored flake warning list in .flake8. Solve issues regarding wrong calls to format(). Use f-strings instead.

PR Checklist

• If this is a work in progress PR, set as a Draft PR
• Linted my code according to the style guides.
• Added tests to verify changes to the code.
• Added necessary documentation to any new functions/classes following the
  expect style.
• Added relevant method tags (i.e. GRAV, EM, etc.)
• Marked as ready for review (ff this is was a draft PR), and converted
  to a Pull Request
• Tagged @simpeg/simpeg-developers when ready for review.

Reference issue

What does this implement/fix?

Additional information

Would be nice to merge this after #1238. The F522, F523 and F524 errors should be removed
from the .flake8 file.

TODO

• Update branch after merging Move flake8 ignored rules to .flake8 and rename Makefile targets #1238
• Remove F522 from .flake8
• Remove F523 from .flake8
• Remove F524 from .flake8

[codecov]

Codecov Report

Merging #1245 (f63fb87) into main (b8dcec5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1245   +/-   ##
=======================================
  Coverage   82.31%   82.31%           
=======================================
  Files         164      164           
  Lines       24958    24958           
=======================================
  Hits        20544    20544           
  Misses       4414     4414           

Impacted Files	Coverage Δ
SimPEG/electromagnetics/static/resistivity/IODC.py	62.80% <ø> (ø)