Cleaned up module001-ch003-core-projects.xml

round the world to around the world
changed for more overview to for an overview
Did some sentence cleanup, removed words
changed as to an
Corrected run on sentences
queryable, changed to query-able

Change-Id: Ib2d55a2872cc00542918e12583dfa32d04c6c90f
Merge "Cleaned up module001-ch003-core-projects.xml"