Remove reference to copying parameters.yml to parameters.yml.dist as this file is now included in standard distribution, and renumber all following steps.
bug #3559 Remove reference to copying parameters.yml from Git cookbook (pwaring)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #3559).

Discussion
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Remove reference to copying parameters.yml from Git cookbook

This file is included in standard distribution so no longer needs to be copied.

Commits
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b392af5 Remove reference to copying parameters.yml to parameters.yml.dist as this file is now included in standard distribution, and renumber all following steps.