fix: Coulombs Unit

[CarloVarni]

Since e=1 the C unit should be C = 1/1.602176634e-19 = 6.2415091e18 so that e = 1.602176634e−19 C is respected

[codecov]

Codecov Report

Merging #1179 (3c699ce) into main (6b30469) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1179   +/-   ##
=======================================
  Coverage   47.80%   47.80%           
=======================================
  Files         360      360           
  Lines       18549    18549           
  Branches     8756     8756           
=======================================
  Hits         8867     8867           
  Misses       3633     3633           
  Partials     6049     6049           

Impacted Files	Coverage Δ
Core/include/Acts/Definitions/Units.hpp	100.00% <ø> (ø)

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