bug: links to legacy developing guides are broken

[sanderaarts]

Describe the Bug

On both https://ionicframework.com/docs/developing/ios and https://ionicframework.com/docs/developing/android there are 2 links to the 'Developing for {platform} with Cordova (Legacy)', pointing to /docs/v6/developing/{platform}. But both these URLs give a 404 Not Found error.

Expected Behavior

Show the legacy (Cordova) developing guides for iOS and Android.

Steps to Reproduce

iOS

1. Go to https://ionicframework.com/docs/developing/ios
2. Click either the 'legacy developing for iOS guide' link or the 'Developing for iOS with Cordova (Legacy)' card.

Android

1. Go to https://ionicframework.com/docs/developing/android
2. Click either the 'legacy developing for Android guide' link or the 'Developing for Android with Cordova (Legacy)' card.

Screenshots

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Operating System

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Browser

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Version

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Additional Information

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