Update examples on parallel processing

[mfeurer]

No description provided.

[codecov]

Codecov Report

Merging #1059 (bb8aa35) into development (1f5bb5a) will increase coverage by 0.07%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #1059      +/-   ##
===============================================
+ Coverage        85.64%   85.71%   +0.07%     
===============================================
  Files              128      128              
  Lines            10272    10272              
===============================================
+ Hits              8797     8805       +8     
+ Misses            1475     1467       -8     

Impacted Files	Coverage Δ
...ature_preprocessing/select_rates_classification.py	87.32% <0.00%> (+1.40%)	⬆️
..._preprocessing/select_percentile_classification.py	87.93% <0.00%> (+1.72%)	⬆️
...ipeline/components/regression/gradient_boosting.py	92.30% <0.00%> (+2.88%)	⬆️
...eline/components/feature_preprocessing/fast_ica.py	97.82% <0.00%> (+6.52%)	⬆️

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