Fix DialogContainer link in docs

Author: devongovett

packages/dev/docs/pages/releases/2020-10-01.mdx

@@ -31,7 +31,7 @@ Finally, make sure you check out the [last blog post](https://react-spectrum.ado
 
 ## New components
 
-- **DialogContainer** - [@devongovett](https://github.com/devongovett) - [PR](https://github.com/adobe/react-spectrum/pull/1082) - [documentation](https://react-spectrum.adobe.com/react-spectrum/ToggleButton.html)
+- **DialogContainer** - [@devongovett](https://github.com/devongovett) - [PR](https://github.com/adobe/react-spectrum/pull/1082) - [documentation](https://react-spectrum.adobe.com/react-spectrum/DialogContainer.html)
     - `@react-spectrum/dialog`
 - **Tooltip** - [@snowystinger](https://github.com/snowystinger) - [PR](https://github.com/adobe/react-spectrum/pull/843) - [documentation](https://react-spectrum.adobe.com/react-spectrum/Tooltip.html)
     - `@react-spectrum/tooltip`