Rewording
Update 01-chapter3.markdown
[zh] Fix typo in 01-chapter1

Change 丰富的 git 知识 --> 丰富的 Git 知识
In the original en-document, it should be Git rather than git.
What's more, this book often use Git rather than git when refer
to Git, so I think it should be a typo.
Merge pull request #789 from lord63/master

[zh] Fix typo in 01-chapter1
Merge pull request #788 from hoeggi/patch-1

Update 01-chapter3.markdown
Improving description

Describing what happens when not specifying the time of the day.
typo: "User who are" to "Users who are"
typo: "works as follow:" to "works as follows:"
Merge pull request #791 from ajschumacher/patch-2

typo: "works as follow:" to "works as follows:"
Merge pull request #787 from daftano/en

Rewording
Merge pull request #790 from ajschumacher/patch-1

typo: "User who are" to "Users who are"