spelling fix

Author: corwintines

public/content/roadmap/pectra/index.md

@@ -38,7 +38,7 @@ Currently, network targets an average 3 blobs per block with a maximum of 6 blob
 
 ### Increase calldata cost {#7623}
 
-Before the introduction of [blobs in Dencun upgrade](/roadmap/danksharding), L2s were using [calldata](/docs/data-availability/blockchain-data-storage-strategies/#calldata) to store their data in Ethereum. Both blobs and calldata affect Ethereum's bandiwdth usage. While most blocks only use a minimal amount of calldata, data-heavy blocks that also contain many blobs can be harmful to Ethereum's p2p network. 
+Before the introduction of [blobs in Dencun upgrade](/roadmap/danksharding), L2s were using [calldata](/docs/data-availability/blockchain-data-storage-strategies/#calldata) to store their data in Ethereum. Both blobs and calldata affect Ethereum's bandwidth usage. While most blocks only use a minimal amount of calldata, data-heavy blocks that also contain many blobs can be harmful to Ethereum's p2p network. 
 
 To address this, [EIP-7623](https://eips.ethereum.org/EIPS/eip-7623) increases calldata pricing, but only for data-heavy transactions. This bounds the worst-case block size, provides an incentive for L2s to only use blobs and leaves over 99% of transactions unaffected.