line length fix

Author: DrW3RK

cumulus/README.md

@@ -221,7 +221,8 @@ For more information, check the [Paseo repo](https://github.com/paseo-network).
 
 ### Westend
 
-[Westend](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwestend-rpc.polkadot.io#/explorer) is a long running testnet for Polkadot,
+[Westend](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwestend-rpc.polkadot.io#/explorer)
+is a long running testnet for Polkadot,
 primarily intended to provide a testing environment for Parity to test the latest changes in the SDK.
 
 ### Testnet Parachains