Add default values for all arguments of modeling functions in User Guide

[exalate-issue-sync]

Some modeling arguments, as documented in the User Guide, have a description but not a default value listed. Since that's something people would want to know (defaults are usually available in R docs, but less so in Python), we should go through and update all the algorithm pages (listed here [http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science.html)|http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science.html)].

e.g. alpha, lambda in GLM: [http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/glm.html|http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/glm.html]

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-7745
Assignee: hannah.tillman
Reporter: Erin LeDell
State: Resolved
Fix Version: 3.32.0.2
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#4922