Fix link in docs to file which was not there before

[mfeurer]

No description provided.

[codecov]

Codecov Report

Merging #1294 (cd6503e) into master (bab9005) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1294      +/-   ##
==========================================
- Coverage   88.05%   88.02%   -0.03%     
==========================================
  Files         140      140              
  Lines       11148    11148              
==========================================
- Hits         9816     9813       -3     
- Misses       1332     1335       +3     

Impacted Files	Coverage Δ
...eline/components/feature_preprocessing/fast_ica.py	91.30% <0.00%> (-6.53%)	⬇️

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