Update h2o.assign() definition

Description

The docs for h2o.assign() in R are misleading – it says it makes a copy of the data frame: "Makes a copy of the data frame and gives it the desired the key."

Let's update this and also add more context to the Python h2o.assign() description: "(internal) Assign new id to the frame"

h2o.assign doesn't copy any data, it creates a new frame with copied metadata of the original frame

Assignee

Erin LeDell

Reporter

Erin LeDell