docs: fix examples

Author: tannerlinsley

README.md

@@ -32,6 +32,7 @@ Enjoy this library? Try the entire [TanStack](https://tanstack.com)! [React Tabl
 
 Still on **React Query v2**? No problem! Check out the v2 docs here: https://react-query-v2.tanstack.com/. <br />
 Would you like to try **React Query v4beta**? Check out the v4 beta docs here: https://react-query-beta.tanstack.com/.
+
 ## Quick Features
 
 - Transport/protocol/backend agnostic data fetching (REST, GraphQL, promises, whatever!)
@@ -94,4 +95,4 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 
 This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
 
-<!-- Force 3 -->
+<!-- Use the force, Luke -->

docs/src/pages/examples/basic.mdx

@@ -8,7 +8,7 @@ toc: false
 - [View Source](https://github.com/tannerlinsley/react-query/tree/main/examples/basic)
 
 <iframe
-  src="https://codesandbox.io/embed/github/tannerlinsley/react-query/tree/master/examples/basic?autoresize=1&fontsize=14&theme=dark"
+  src="https://codesandbox.io/embed/github/tannerlinsley/react-query/tree/main/examples/basic?autoresize=1&fontsize=14&theme=dark"
   title="tannerlinsley/react-query: basic"
   sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
   style={{

docs/src/pages/examples/custom-hooks.mdx

@@ -8,7 +8,7 @@ toc: false
 - [View Source](https://github.com/tannerlinsley/react-query/tree/main/examples/custom-hooks)
 
 <iframe
-  src="https://codesandbox.io/embed/github/tannerlinsley/react-query/tree/master/examples/custom-hooks?autoresize=1&fontsize=14&theme=dark"
+  src="https://codesandbox.io/embed/github/tannerlinsley/react-query/tree/main/examples/custom-hooks?autoresize=1&fontsize=14&theme=dark"
   title="tannerlinsley/react-query: custom-hooks"
   sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
   style={{