docs: Update outdated Expo command in Troubleshooting guide (#1660)

Author: amandeepmittal

website/docs/12.x/docs/guides/troubleshooting.mdx

@@ -10,7 +10,7 @@ Check that you have matching versions of core dependencies:
 - React
 - React Test Renderer
 
-React Native uses different versioning scheme from React, you can use [React Native Upgrade Helper](https://react-native-community.github.io/upgrade-helper/) to find the correct matching between React Native & React versions. In case you use Expo, you should use dependency versions recommended by them and set by `expo upgrade` command.
+React Native uses different versioning scheme from React, you can use [React Native Upgrade Helper](https://react-native-community.github.io/upgrade-helper/) to find the correct matching between React Native & React versions. In case you use Expo, run `npx expo install --fix` in your project to validate and install compatible versions of these dependencies.
 
 React Test Renderer usually has same major & minor version as React, as they are closely related and React Test Renderer is part of [React monorepo](https://github.com/facebook/react).