Duplicate Basic Routing sections

[thedejifab]

@thosakwe there seems to be 2 accessible sections on basic routing that appear to contain the same content.

https://docs.angel-dart.dev/v/2.x/guides/basic-routing and https://docs.angel-dart.dev/v/2.x/guides/basic-routing-1.

I'm looking to fix it and send a PR but I want to be sure it wasn't an intentional decision.