Fix one typo

Author: nadimkobeissi

docs/pos/index.md

@@ -1,6 +1,6 @@
 # Proof of Stake on Polygon
 
-Polygon PoS, originally launched as Matic Network, has undergone significant transformations to address the evolving needs of blockchain scalability and security. Initially designed to scale Ethereum through a hybrid Plasma sidechain, the network is currently in the process of transitioning into a ZK-based validium solution on Ethereum. This evoluction aims to offer enhanced scalability and robust security features.
+Polygon PoS, originally launched as Matic Network, has undergone significant transformations to address the evolving needs of blockchain scalability and security. Initially designed to scale Ethereum through a hybrid Plasma sidechain, the network is currently in the process of transitioning into a ZK-based validium solution on Ethereum. This evolution aims to offer enhanced scalability and robust security features.
 
 In this transformation, Polygon PoS incorporates the execution environment of Polygon zkEVM along with a dedicated data availability layer. The architecture is inherently modular and composable, enabling it to seamlessly integrate into a broader fleet of layer-two scaling solutions. Despite its place in this diverse ecosystem, Polygon PoS will retain its role as a crucial "mainnet," serving as the foundational infrastructure for a wide array of decentralized applications and services.