l10n: zh_CN: various fixes on command arguments
l10n: zh_CN: various fixes on command arguments

Updated translations for Git 2.3.0 l10n round 2, and fixed various
translations for command arguments.

Signed-off-by: Jiang Xin <61b5e6324abee2d58ba2cf49f31c723faf6fd946@gmail.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git