Update openbrush-follow-up.md

Author: 0xMarkian

applications/openbrush-follow-up.md

@@ -21,7 +21,7 @@ This grant aims to cover milestones 3-6.
 The mission for this project is to make ink! usable and facilitate WASM ecosystem wide adoption. 
 
 To be successful with this mission, we have outlined several steps that need to be taken.
-1. OpenBrush is a library for secture smart contract development on ink!, same as
+1. OpenBrush is a library for secure smart contract development on ink!, same as
    [OpenZeppelin](https://github.com/OpenZeppelin/openzeppelin-contracts) on Ethereum.
 2. OpenBrush should serve as a starting point for every developer entering a Polkadot(ink!) ecosystem.
 3. In addition to having a standard implementation, Openbrush should also have macroses to simplify and abstract up applications(smart contracts) development.