docs: avoid absolute docs URLs

src/pages/authentication/building-with-angular.md

@@ -121,7 +121,7 @@ Here we're using an Rxjs `Subject` to represent a stream of sign in events. `sta
 
 ### 4.3 Authentication
 
-First, describe the auth options we need to pass to Connect. [Learn more about `AuthOptions` here](https://docs.blockstack.org/authentication/overview). Let's modify the default component to look like this:
+First, describe the auth options we need to pass to Connect. [Learn more about `AuthOptions` here](/authentication/overview). Let's modify the default component to look like this:
 
 ```typescript
 import { Component } from '@angular/core';

src/pages/understand-stacks/integrate-stacking.md

@@ -238,7 +238,7 @@ The transaction completion will take several minutes. Only one stacking transact
 
 ## Step 6: Confirm lock-up
 
-The new transaction will not be completed immediately. It'll stay in the `pending` status for a few minutes. We need to poll the status and wait until the transaction status changes to `success`. We can use the [Stacks Blockchain API client library](https://docs.blockstack.org/references/stacks-blockchain) to check transaction status.
+The new transaction will not be completed immediately. It'll stay in the `pending` status for a few minutes. We need to poll the status and wait until the transaction status changes to `success`. We can use the [Stacks Blockchain API client library](/references/stacks-blockchain) to check transaction status.
 
 ```js
 const { TransactionsApi } = require('@stacks/blockchain-api-client');