Update testnets.mdx

Removed Goerli

Author: freddmannen

docs/flashbots-auction/advanced/testnets.mdx

@@ -2,16 +2,15 @@
 title: Testnets
 ---
 
-Flashbots operates on Goerli and Sepolia, so that searchers can test Flashbots without risking real funds. 
+Flashbots operates on Sepolia so that searchers can test Flashbots without risking real funds. 
 
 ## Bundle Relay URLS
 
 | Network | URL |
 | --- | --- |
 | Mainnet | `https://relay.flashbots.net` |
-| Goerli | `https://relay-goerli.flashbots.net` |
 | Sepolia | `https://relay-sepolia.flashbots.net` |
-| Holesky | `https://relay-holesky.flashbots.net` |
+| Holešky | `https://relay-holesky.flashbots.net` |
 
 ## Examples