Doc: Fix variable name

[hnishi]

This is a small fix.

Use automl variable that is function's argument instead of cls variable that is defined outside the function.

[codecov]

Codecov Report

Merging #1200 (ae84108) into master (3d53cd9) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1200      +/-   ##
==========================================
- Coverage   88.16%   88.14%   -0.02%     
==========================================
  Files         138      138              
  Lines       10866    10866              
==========================================
- Hits         9580     9578       -2     
- Misses       1286     1288       +2     

Impacted Files	Coverage Δ
...eline/components/feature_preprocessing/fast_ica.py	91.30% <0.00%> (-6.53%)	⬇️
...ine/components/feature_preprocessing/kernel_pca.py	94.73% <0.00%> (-1.76%)	⬇️
...ature_preprocessing/select_rates_classification.py	85.91% <0.00%> (-1.41%)	⬇️
...learn/pipeline/components/regression/libsvm_svr.py	90.24% <0.00%> (-1.22%)	⬇️
...mponents/feature_preprocessing/nystroem_sampler.py	91.17% <0.00%> (+5.88%)	⬆️

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[eddiebergman]

Hi @hnishi, thanks for spotting this and providing a PR fix it all looks good and is much appreciated :)

As it's currently not broken in master so I've swapped this to the development branch for now. It should be in the master version in our next release. If you wish to contribute anything else in the future we recommend doing so from the development branch!

Happy Wednesday,
Eddie