Revert relative path for external

Author: Adamj1232

docs/src/routes/docs/[...1]overview/[...3]onboard.js-migration-guide.md

@@ -1,5 +1,5 @@
 ---
-sidebar_title: "Migration Guide: Web3-Onboard"
+sidebar_title: "Migration Guide from v1"
 ---
 # Migration Guide from onboard.js to web3-onboard
 
@@ -18,7 +18,7 @@ If you have bnc-onboard installed, you will need to install web3-onboard instead
 3. Make use of our API actions like `await onboard.connectWallet()` to allow a user to connect their wallets.
 
 For a full code overview of the upgrade process using the React Hooks package please see [this PR](https://github.com/blocknative/react-demo/pull/160/files) with special attention to the `App.js` and `services.js` files.
-To help you get started quickly on any framework you're using, we’ve put together [a quickstart that includes the above-mentioned steps](/onboard#quickstart).
+To help you get started quickly on any framework you're using, we’ve put together [a quickstart that includes the above-mentioned steps](https://docs.blocknative.com/onboard#quickstart).
 
 ### Package Upgrade - Modularization
 
@@ -89,7 +89,7 @@ We've also added more expansive custom CSS properties so you can style every par
 }
 ```
 
-The full list of CSS variables for web3-onboard are available [here](/docs/getting-started/customization).
+The full list of CSS variables for web3-onboard are available [here](/docs/packages/core#custom-styling).
 
 ### Other Important Changes