Update SECURITY.md

SECURITY.md

@@ -6,7 +6,7 @@ vulnerabilities as they are open for everyone to see! ⚠️**
 We encourage responsible disclosure practices for security vulnerabilities.
 
 If you believe you've found a security-related bug, fill out a new
-vulnerability report via GitHub directly. To do sok follow these instructions:
+vulnerability report via GitHub directly. To do so follow these instructions:
 1. Click on the `Security` tab in the project repository.
 2. Click the green `Report a vulnerability` button at the top right corner.
 3. Fill in the form as accurately as you can, including as many details as