doc: fix a typo in the header
@@ -6,7 +6,7 @@ description: >
What is Operator SDK? Why should I use it?
---
-## What is Opearator SDK and why should I use it?
+## What is Operator SDK and why should I use it?
This project is a component of the [Operator Framework][of-home], an open source toolkit to manage Kubernetes native applications, called Operators, in an effective, automated, and scalable way. Read more in the [introduction blog post][of-blog].
