Fix typo (ot -> to)

docs/09.2-form-input-binding-sugar.md

@@ -62,7 +62,7 @@ var WithLink = React.createClass({
 });
 ```
 
-`LinkedStateMixin` adds a method ot your React component called `linkState()`. `linkState()` returns a `ReactLink` object which contains the current value of the React state and a callback to change it.
+`LinkedStateMixin` adds a method to your React component called `linkState()`. `linkState()` returns a `ReactLink` object which contains the current value of the React state and a callback to change it.
 
 `ReactLink` objects can be passed up and down the tree as props, so it's easy (and explicit) to set up two-way binding between a component deep in the hierarchy and state that lives higher in the hierarchy.