Enhanced storage pricing page updates

[atovpeko]

[github-actions[bot]]

Allow 10 minutes from last push for the staging site to build. If the link doesn't work, try using incognito mode instead. For internal reviewers, check web-documentation repo actions for staging build status. Link to build for this PR: http://docs-dev.timescale.com/docs-279-docs-rfcupdate-the-pricing-page-for-new-pricing-updates-for-enhanced-storage