github newrelic/docs-website release-11.04.2021-13.19

🚀 What's new?

@zuluecho9 - fix(original models): combining original pricing/user docs ->
@zuluecho9 - fix(usage): missing collapser element ->
@zuluecho9 - Merge pull request #4711 from newrelic/Combining-original-user-subscription-UI-docs ->

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