docs(docs-site): update proof tier config for testnet (#17627)

packages/docs-site/src/content/docs/network-reference/network-configuration.md

@@ -3,7 +3,7 @@ title: Network configuration
 description: The network configuration page describes many of the configuration details of the network.
 ---
 
-## Tier configuration (Mainnet & Testnet)
+## Tier configuration (Mainnet)
 
 You can view the full `TierProviderV2` tier configuration [here](https://github.com/taikoxyz/taiko-mono/blob/main/packages/protocol/contracts/L1/tiers/TierProviderV2.sol):
 
@@ -13,6 +13,12 @@ You can view the full `TierProviderV2` tier configuration [here](https://github.
 
 You can view the full network configuration by visiting the TaikoL1 contract on Etherscan [here](https://etherscan.io/address/0x06a9Ab27c7e2255df1815E6CC0168d7755Feb19a#readProxyContract). Then connect your wallet, and select "Read as Proxy". You can then see the config details for the network.
 
+## Tier configuration (Hekla)
+
+You can view the full `TierProviderV2` tier configuration [here](https://github.com/taikoxyz/taiko-mono/blob/main/packages/protocol/contracts/L1/tiers/TierProviderV2.sol):
+
+![hekla proof tiers](~/assets/content/docs/network-reference/proof-tier-config-hekla.webp)
+
 ## Network configuration (Hekla)
 
 You can view the full network configuration by visiting the TaikoL1 contract on Etherscan [here](https://holesky.etherscan.io/address/0x79C9109b764609df928d16fC4a91e9081F7e87DB#readProxyContract). Then connect your wallet, and select "Read as Proxy". You can then see the config details for the network.