Templating "next steps"

[bear454]

Render outputs from terraform into "next steps" content via Ruby format string syntax.

[codecov[bot]]

Codecov Report

Merging #172 (4709f73) into master (6fd40f2) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #172   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           24        24           
  Lines          639       650   +11     
=========================================
+ Hits           639       650   +11     

Impacted Files	Coverage Δ
app/controllers/wrapup_controller.rb	100.00% <100.00%> (ø)
app/services/terraform.rb	100.00% <100.00%> (ø)

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[bear454]

vendor/locales/en.yml includes:

  next_steps: |
    **%{greeting}**

    I see you uploaded a file called `%{content}`. Thanks.

    [Link test](/welcome?file=%{content})