Move Usage section in README below "Configure PDF.js worker"

Since you can't really start using React-PDF without configuring PDF.js worker, this order did not make sense.

README.md

@@ -90,37 +90,6 @@ module.exports = {
 }
 ```
 
-### Usage
-
-Here's an example of basic usage:
-
-```tsx
-import { useState } from 'react';
-import { Document, Page } from 'react-pdf';
-
-function MyApp() {
-  const [numPages, setNumPages] = useState<number>();
-  const [pageNumber, setPageNumber] = useState<number>(1);
-
-  function onDocumentLoadSuccess({ numPages }: { numPages: number }): void {
-    setNumPages(numPages);
-  }
-
-  return (
-    <div>
-      <Document file="somefile.pdf" onLoadSuccess={onDocumentLoadSuccess}>
-        <Page pageNumber={pageNumber} />
-      </Document>
-      <p>
-        Page {pageNumber} of {numPages}
-      </p>
-    </div>
-  );
-}
-```
-
-Check the [sample directory](https://github.com/wojtekmaj/react-pdf/tree/main/sample) in this repository for a full working example. For more examples and more advanced use cases, check [Recipes](https://github.com/wojtekmaj/react-pdf/wiki/Recipes) in [React-PDF Wiki](https://github.com/wojtekmaj/react-pdf/wiki/).
-
 ### Configure PDF.js worker
 
 For React-PDF to work, PDF.js worker needs to be provided. You have several options.
@@ -204,6 +173,37 @@ or:
 +pdfjs.GlobalWorkerOptions.workerSrc = `//unpkg.com/pdfjs-dist@${pdfjs.version}/legacy/build/pdf.worker.min.js`;
 ```
 
+### Usage
+
+Here's an example of basic usage:
+
+```tsx
+import { useState } from 'react';
+import { Document, Page } from 'react-pdf';
+
+function MyApp() {
+  const [numPages, setNumPages] = useState<number>();
+  const [pageNumber, setPageNumber] = useState<number>(1);
+
+  function onDocumentLoadSuccess({ numPages }: { numPages: number }): void {
+    setNumPages(numPages);
+  }
+
+  return (
+    <div>
+      <Document file="somefile.pdf" onLoadSuccess={onDocumentLoadSuccess}>
+        <Page pageNumber={pageNumber} />
+      </Document>
+      <p>
+        Page {pageNumber} of {numPages}
+      </p>
+    </div>
+  );
+}
+```
+
+Check the [sample directory](https://github.com/wojtekmaj/react-pdf/tree/main/sample) in this repository for a full working example. For more examples and more advanced use cases, check [Recipes](https://github.com/wojtekmaj/react-pdf/wiki/Recipes) in [React-PDF Wiki](https://github.com/wojtekmaj/react-pdf/wiki/).
+
 ### Support for annotations
 
 If you want to use annotations (e.g. links) in PDFs rendered by React-PDF, then you would need to include stylesheet necessary for annotations to be correctly displayed like so: