Update endpoints.md (#2688)

Co-authored-by: Byron Gravenorst <50852695+bgravenorst@users.noreply.github.com>

Author: nikolaysamoil0ff

services/get-started/endpoints.md

@@ -17,7 +17,7 @@ Ensure that you replace `<YOUR-API-KEY>` with an API key from your [MetaMask Dev
 | Network           | Description             | URL                                                     |
 |-------------------|-------------------------|---------------------------------------------------------|
 | Mainnet           | JSON-RPC over HTTPS     | `https://arbitrum-mainnet.infura.io/v3/<YOUR-API-KEY>`  |
-| Mainnet           | JSON-RPC over WebSocket | `wss://arbitrum-mainnet.io/ws/v3/<YOUR-API-KEY>`        |
+| Mainnet           | JSON-RPC over WebSocket | `wss://arbitrum-mainnet.infura.io/ws/v3/<YOUR-API-KEY>`        |
 | Testnet (Sepolia) | JSON-RPC over HTTPS     | `https://arbitrum-sepolia.infura.io/v3/<YOUR-API-KEY>`  |
 | Testnet (Sepolia) | JSON-RPC over WebSocket | `wss://arbitrum-sepolia.infura.io/ws/v3/<YOUR-API-KEY>` |
 
@@ -26,7 +26,7 @@ Ensure that you replace `<YOUR-API-KEY>` with an API key from your [MetaMask Dev
 | Network        | Description             | URL                                                     |
 |----------------|-------------------------|---------------------------------------------------------|
 | Mainnet        | JSON-RPC over HTTPS     | `https://avalanche-mainnet.infura.io/v3/<YOUR-API-KEY>` |
-| Mainnet        | JSON-RPC over WebSocket | `wss://avalanche-mainnet.io/ws/v3/<YOUR-API-KEY>`       |
+| Mainnet        | JSON-RPC over WebSocket | `wss://avalanche-mainnet.infura.io/ws/v3/<YOUR-API-KEY>`       |
 | Testnet (Fuji) | JSON-RPC over HTTPS     | `https://avalanche-fuji.infura.io/v3/<YOUR-API-KEY>`    |
 | Testnet (Fuji) | JSON-RPC over WebSocket | `wss://avalanche-fuji.infura.io/ws/v3/<YOUR-API-KEY>`   |