Categorize components in API Reference

[angela97lin]

Closes #569. Also adds tiny description for each section per our docs discussion :)

You can see the updated docs here: https://evalml.featurelabs.com/en/569_categorize_components/api_reference.html

[codecov]

Codecov Report

Merging #663 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #663   +/-   ##
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  Coverage   99.08%   99.08%           
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  Files         139      139           
  Lines        4934     4934           
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  Hits         4889     4889           
  Misses         45       45           

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[dsherry]

What do the extra "~" here do?

[angela97lin]

Extra squiggles for the new longer name (linter was complaining about duplicates since we have a heading and subheading both as Pipelines, so updated the latter)

[dsherry]

LGTM! Just don't forget to take a look at the final RTD build before merging :)

[angela97lin]

@dsherry Thanks for the doc suggestions! Updated, waiting for codecov and then will merge :)

[angela97lin]

https://evalml.featurelabs.com/en/569_categorize_components/api_reference.html

Looks fine, merging!

[kmax12]

@angela97lin Like this a lot! one question - any reason we didn't add the Catboost classifier/regressor components? Oh and also the xgboost regressor seems to be missing

https://evalml.featurelabs.com/en/latest/api_reference.html#classifiers

[angela97lin]

@kmax12 No reason at all, seems like they were just missed. Going to open a new PR and fix this!