docs: fix "Upgrade Expo" command

Author: SutuSebastian

docs/src/content/docs/guides/upgrading-deps.mdx

@@ -50,7 +50,7 @@ Visit the npm package registry [here](https://www.npmjs.com/package/expo) to ens
 Once you have confirmed that you have the latest version, open your terminal and enter the following command:
 
 ```bash
-pnpm add expo@lastVersion
+pnpm add expo@latest
 ## pnpm add [email protected] for example
 ```