Update hooks-overview.md (#1320)

content/docs/hooks-overview.md

@@ -231,7 +231,7 @@ function FriendListItem(props) {
 }
 ```
 
-The state of these components is completely independent. Hooks are a way to reuse *stateful logic*, not state itself. In fact, each *call* to a Hook has a competely isolated state -- so you can even use the same custom Hook twice in one component.
+The state of these components is completely independent. Hooks are a way to reuse *stateful logic*, not state itself. In fact, each *call* to a Hook has a completely isolated state -- so you can even use the same custom Hook twice in one component.
 
 Custom Hooks are more of a convention than a feature. If a function's name starts with "`use`" and it calls other Hooks, we say it is a custom Hook. The `useSomething` naming convention is how our linter plugin is able to find bugs in the code using Hooks.