fix `LimPID` docstring code formatting

[baggepinnen]

[codecov[bot]]

Codecov Report

Merging #91 (ed79953) into main (db37027) will decrease coverage by 0.34%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
- Coverage   68.59%   68.25%   -0.35%     
==========================================
  Files          23       23              
  Lines         952      967      +15     
==========================================
+ Hits          653      660       +7     
- Misses        299      307       +8     

Impacted Files	Coverage Δ
src/Blocks/continuous.jl	98.17% <ø> (ø)
src/Electrical/Digital/tables.jl	0.00% <0.00%> (ø)
src/Electrical/Digital/components.jl	0.00% <0.00%> (ø)
src/Thermal/HeatTransfer/ideal_components.jl	100.00% <0.00%> (ø)
src/Electrical/Analog/ideal_components.jl	100.00% <0.00%> (+15.78%)	:arrow_up:

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