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 - [x] run `vale /docs/file/path` on all changed `.md` files to ensure all grammar rules pass - [x] run `markdownlint /docs/file/path` on all changed `.md` files to ensure all linting rules pass - [x] 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 - [x] the path to that doc must be redirected to a valid URL via the `_redirects` file - [x] `_redirects` were manually verified with the cloudflare preview link - [x] `sidebars.json` reflects all changes made to file path ### If a document was moved - [x] all files that were moved from their current directory to a new path have had their paths redirected via the `_redirects` file - [x] `_redirects` were manually verified with the cloudflare preview link - [x] `sidebars.json` reflects all changes made to file path

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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?