fix(layouts): index.redirects truncates newline

[james-d-elliott]

Summary

This fixes an issue where the generation of aliases may remove newlines erroneously moving subsequent lines to the same line as the last alias or otherwise mangle the output.

Basic example

Can be tested in a short-code with the following content rendered in a fence (you can also see the output of the original using this method just with the original template; you can also replace .Aliases with dict to see what it does with an empty enumerable I believe):

start
{{- range $p := .Site.Pages }}
{{- range .Aliases }}
{{ . }} {{ $p.RelPermalink }}
{{- end }}
{{- end }}
end

Motivation

This prevents an error in netlify about a redirect which is improperly formatted.

Checks

• Read Create a Pull Request
• Supports all screen sizes (if relevant)
• Supports both light and dark mode (if relevant)
• Passes npm run test

[h-enk]

Tested/verified. Thanks!

Example, before:

/introduction/ /docs/prologue/introduction/
/quick-start/ /docs/prologue/quick-start/
/commands/ /docs/prologue/commands/# /docs/1.0/prologue/   /docs/1.0/prologue/introduction/
# /docs/1.0/help/       /docs/1.0/help/how-to-update/
# /docs/1.0/            /docs/1.0/prologue/introduction/
# /docs/                /docs/1.0/prologue/introduction/
#
# /docs/0.1/*           https://v0-1-0--doks-versioning-poc.netlify.app/docs/0.1/:splat  200
# /docs/0.2/*           https://v0-2-0--doks-versioning-poc.netlify.app/docs/0.2/:splat  200

Example, after:

/introduction/ /docs/prologue/introduction/
/quick-start/ /docs/prologue/quick-start/
/commands/ /docs/prologue/commands/

# /docs/1.0/prologue/   /docs/1.0/prologue/introduction/
# /docs/1.0/help/       /docs/1.0/help/how-to-update/
# /docs/1.0/            /docs/1.0/prologue/introduction/
# /docs/                /docs/1.0/prologue/introduction/
#
# /docs/0.1/*           https://v0-1-0--doks-versioning-poc.netlify.app/docs/0.1/:splat  200
# /docs/0.2/*           https://v0-2-0--doks-versioning-poc.netlify.app/docs/0.2/:splat  200