Fix typo in part7a.md regarding access to functions

Author: dafydddev

src/content/7/en/part7a.md

@@ -15,7 +15,7 @@ In addition, this part contains a larger exercise series that extends the BlogLi
 
 React offers 18 different [built-in hooks](https://react.dev/reference/react/hooks), of which the most popular ones are the [useState](https://react.dev/reference/react/useState) and [useEffect](https://react.dev/reference/react/useEffect) hooks that we have already been using extensively.
 
-In [part 5](/en/part5/props_children_and_proptypes#references-to-components-with-ref) we used the [useRef](https://react.dev/reference/react/useRef) and [useImperativeHandle](https://react.dev/reference/react/useImperativeHandle) which allowed a component to provide access th their functions to other components. In [part 6](/en/part6/react_query_use_reducer_and_the_context) we used [useContext](https://react.dev/reference/react/useContext) to implement a global state.
+In [part 5](/en/part5/props_children_and_proptypes#references-to-components-with-ref) we used the [useRef](https://react.dev/reference/react/useRef) and [useImperativeHandle](https://react.dev/reference/react/useImperativeHandle) which allowed a component to provide access to their functions to other components. In [part 6](/en/part6/react_query_use_reducer_and_the_context) we used [useContext](https://react.dev/reference/react/useContext) to implement a global state.
 
 Within the last couple of years, hooks have become the standard way for libraries to expose their APIs. Throughout this course we have already seen several examples of this: [Zustand](https://zustand-demo.pmnd.rs/) provides <i>useStore</i> for accessing global state, [React Router](https://reactrouter.com/) exposes <i>useNavigate</i> and <i>useParams</i> for programmatic navigation and URL parameter access, and [React Query](https://tanstack.com/query/latest) offers <i>useQuery</i> and <i>useMutation</i> for server state management.