Update dRPC provider entry and add Linea RPC endpoints

[dRPCMarketing]

Summary

Updates the existing dRPC provider entry and adds Linea mainnet and testnet RPC endpoints to the node providers documentation.

Changes

• Updated dRPC provider name/link in the providers list
• Added dRPC RPC endpoints for:
  • Linea mainnet
  • Linea testnet

Verifying this change

This change has not been tested locally, because it is a documentation-only update involving provider listings and endpoint links. Links were verified manually.

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Note

Adds dRPC public RPC endpoints and clarifies provider naming in node providers docs.

• Adds public endpoints https://linea.drpc.org (mainnet) and https://linea-sepolia.drpc.org (testnet) with Linea API methods and WebSocket marked as supported
• Renames provider entry to dRPC NodeCloud in the Private RPC endpoints table

^{Written by Cursor Bugbot for commit 99f1432. This will update automatically on new commits. Configure here.}

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