Documentation fixes #664
Description
The xml documentation has a few things to fix.
- MissingValuesRowDropper.Complement link in the MissingValuesRowDropper page.
- List of links on the 'more information' of the FastTree pages because of the missing type in the list.
- Symsgd documentation needs to be wired to the CSharpAPI.cs
- Indentation fixes for some of the examples.
- Paragraphing text for CategoricalOneHotVectorizer.