Remove elastic subnet in docs

[sukantoraymond]

Docs PR Template

Why this should be merged

How this works

How these changes were tested

To prevent any errors while building

• run vale /docs/file/path on all changed .md files to ensure all grammar rules pass
• run markdownlint /docs/file/path on all changed .md files to ensure all linting rules pass
• complete the above two checks and all additional rules outlined in style-checker-notes.md to
  ensure all checks pass

If a document was removed/deleted

• the path to that doc must be redirected to a valid URL via the
  _redirects file
• _redirects were manually verified with the cloudflare preview link
• sidebars.json reflects all changes made to file path

If a document was moved

• all files that were moved from their current directory to a new path have had their paths
  redirected via the _redirects file
• _redirects were manually verified with the cloudflare preview link
• sidebars.json reflects all changes made to file path

[cloudflare-workers-and-pages]

Deploying avalanche-docs with    Cloudflare Pages

Latest commit:	b524ad3
Status:	✅  Deploy successful!
Preview URL:	https://94d82590.avalanche-docs.pages.dev
Branch Preview URL:	https://remove-elastic.avalanche-docs.pages.dev

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Name	Status	Preview	Comments	Updated (UTC)
avalanche-docs	❌ Failed (Inspect)			Aug 9, 2024 2:33pm

[laviniat1996]

@sukantoraymond Hi, we switched to another framework, and the PR needs to be update accordingly. Please let me know if you need help with the changes, I'm more than happy to assist!

[ashucoder9]

@sukantoraymond any updates on this PR?