Improve message to users around template selection

[pru55e11]

Making it more clear that users can skip template selection during aio app init

#683

Motivation and Context

Users are asking for help at this step in slack

How Has This Been Tested?

tested plugin locally with and without template selection

Screenshots (if appropriate):

Types of changes

• [x ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ x] I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• [ x] I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• [ x] All new and existing tests passed.

[codecov]

Codecov Report

Merging #684 (1a0aece) into master (5806ad5) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #684   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           57        57           
  Lines         3072      3072           
  Branches       569       569           
=========================================
  Hits          3072      3072           

Impacted Files	Coverage Δ
src/TemplatesCommand.js	100.00% <ø> (ø)

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