Merge pull request #44 from LCTT/master

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Update 20140813 How to Extend or Reduce LVM' s (Logical Volume Management) in Linux--Part II.md
Translated:20140813 How to Extend or Reduce LVM's (Logical Volume Management) in Linux--Part II.md
Merge pull request #1521 from GOLinux/master

Translated:20140813 How to Extend or Reduce LVM's (Logical Volume Management) in Linux--Part II.md