Fix bug bounty typo in readme (#512)

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

README.md

@@ -65,7 +65,7 @@ Also please have a look at the [docs](docs/SUMMARY.md) before contributing. The
 
 ## 🔒 Security
 
-- Please read [Bug Bunty Rules](https://github.com/OneKeyHQ/app-monorepo/blob/onekey/docs/BUG_RULES.md), we have detailed the exact plan in this article.
+- Please read [Bug Bounty Rules](https://github.com/OneKeyHQ/app-monorepo/blob/onekey/docs/BUG_RULES.md), we have detailed the exact plan in this article.
 - Please report suspected security vulnerabilities in private to [email protected]
 - Please do NOT create publicly viewable issues for suspected security vulnerabilities.
 - As an open source project, although we are not yet profitable, we try to give some rewards to white hat hackers who disclose vulnerabilities to us in a timely manner.
@@ -76,4 +76,4 @@ Also please have a look at the [docs](docs/SUMMARY.md) before contributing. The
 
 <a href="https://github.com/onekeyhq/firmware/graphs/contributors">
   <img src="https://contrib.rocks/image?repo=onekeyhq/firmware&max=240&columns=24"/>
-</a>
+</a>