Typo Ethhash -> Ethash

Author: HiroyukiNaito

public/content/developers/docs/consensus-mechanisms/pow/mining/index.md

@@ -70,7 +70,7 @@ Watch Austin walk you through mining and the proof-of-work blockchain.
 
 ## The mining algorithm {#mining-algorithm}
 
-Ethereum Mainnet only ever used one mining algorithm - ['Ethash'](/developers/docs/consensus-mechanisms/pow/mining/mining-algorithms/ethash/). Ethhash was the successor to an original R&D algorithm known as ['Dagger-Hashimoto'](/developers/docs/consensus-mechanisms/pow/mining/mining-algorithms/dagger-hashimoto/).
+Ethereum Mainnet only ever used one mining algorithm - ['Ethash'](/developers/docs/consensus-mechanisms/pow/mining/mining-algorithms/ethash/). Ethash was the successor to an original R&D algorithm known as ['Dagger-Hashimoto'](/developers/docs/consensus-mechanisms/pow/mining/mining-algorithms/dagger-hashimoto/).
 
 [More on mining algorithms](/developers/docs/consensus-mechanisms/pow/mining/mining-algorithms/).