docs: use absolute url

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: jpoehnelt

packages/drive-picker-element/README.md

@@ -170,7 +170,7 @@ After the picker dialog has been closed, the `visible` property will be reset to
 
 For React applications, we recommend using the official React wrapper package: [`@googleworkspace/drive-picker-react`](https://www.npmjs.com/package/@googleworkspace/drive-picker-react).
 
-Please refer to the [package documentation](../drive-picker-react/README.md) for usage instructions.
+Please refer to the [package documentation](https://github.com/googleworkspace/drive-picker-element/tree/main/packages/drive-picker-react) for usage instructions.
 
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