Update polkadot-protocol/architecture/polkadot-chain/overview.md

Co-authored-by: Copilot <[email protected]>

Author: 0xlukem

polkadot-protocol/architecture/polkadot-chain/overview.md

@@ -61,7 +61,7 @@ The new and more efficient way of obtaining core on Polkadot is to go through th
 
 [Agile coretime](/polkadot-protocol/architecture/polkadot-chain/agile-coretime/){target=\_blank} improves the efficient use of Polkadot's network resources and offers economic flexibility for developers, extending Polkadot's capabilities far beyond the original vision outlined in the [whitepaper](https://polkadot.com/papers/Polkadot-whitepaper.pdf){target=\_blank}.
 
-It enables parachains to purchase monthly "bulk" allocations of coretime (the time allocated for utilizing a core, measured in Polkadot relay chain blocks), ensuring heavy-duty parachains that can author a block every six seconds with [Asynchronous Backing](https://wiki.polkadot.com/learn/learn-async-backing/#asynchronous-backing#asynchronous-backing){target=\_blank} can reliably renew their coretime each month. Although six-second block times are now the default, parachains have the option of producing blocks less frequently.
+It enables parachains to purchase monthly "bulk" allocations of coretime (the time allocated for utilizing a core, measured in Polkadot relay chain blocks), ensuring heavy-duty parachains that can author a block every six seconds with [Asynchronous Backing](https://wiki.polkadot.com/learn/learn-async-backing/#asynchronous-backing){target=\_blank} can reliably renew their coretime each month. Although six-second block times are now the default, parachains have the option of producing blocks less frequently.
 
 Renewal orders are prioritized over new orders, offering stability against price fluctuations and helping parachains budget more effectively for project costs.