Cleaned up Training Guide Module 001 - Brief Overview

Corrected run on sentences in several places
Ccreated 2 sentences out of the run on sentences
Removed extra white space before colon
lowercased words in the middle of the sentence
Removed the word "And" from beginning of sentence
For its I added it's because the meaning was "it is"
capitaled The Gap vs the Gap
Added "you" for give you a good idea

Change-Id: I220f435c12bef4740eb0976a00591bb08d862777
Install guide: don't duplicate AMQP configuration

The nova-network section redefines the rabbit_host option. This doesn't
hurt but might lead to problems if the user wants to change the settings
later.

Change-Id: I71481813c77dfa40ca664e99afe7885141b6361f
backport: havana
Merge "Install guide: don't duplicate AMQP configuration"
Merge "Cleaned up Training Guide Module 001 - Brief Overview"