Typos in documentation

appeals-process.xml: spell check failed on 'challengable'
appeals-process.xml: spell check failed on 'rigourous'
Book_Info.xml: spell check failed on 'Refernce'
Book_Preface.xml: spell check failed on 'motiviations'
configuration.xml: repeated instance(s) of 'the'.
configuration.xml: spell check failed on 'implementators'
configuration.xml: spell check failed on 'IntellJ'
configuration.xml: spell check failed on 'testng' (should be TestNG)
eclipse-running.xml: spell check failed on 'dependenices'
eclipse-running.xml: spell check failed on 'Ecilpse'
eclipse-running.xml: spell check failed on 'jsr' (should be JSR)
executing.xml: spell check failed on 'artfact'
executing.xml: spell check failed on 'knowlege'
executing.xml: spell check failed on 'substituate'
executing.xml: spell check failed on 'transitve'
installation.xml: spell check failed on 'documention'
introduction.xml: spell check failed on 'catagory'
introduction.xml: spell check failed on 'specficiation's'
introduction.xml: spell check failed on 'Technially'
introduction.xml: spell check failed on 'TODO'
introduction.xml: spell check failed on 'transfered'
part-test-harness.xml: spell check failed on 'TODO'
reporting.xml: spell check failed on 'Aftering'