Solve the problem that the statement is not smooth and logical mistake about feature 'MSZoning'. (#410)
Solve the problem that the statement is not smooth and logical mistake about feature 'MSZoning'. (#410)

* Solve the problem that the statement is not smooth.

* fix logical mistake about feature 'MSZoning'.

mli/gluon-tutorials-zh,d2l-ai/d2l-zh,mli/gluon-tutorials-zh,d2l-ai/d2l-zh,mli/gluon-tutorials-zh,mli/gluon-tutorials-zh,d2l-ai/d2l-zh