Re-fix links that I fixed 5 days ago... (#1373)

Author: davidkonigsberg

fern/products/ask-fern/pages/features/documents.mdx

@@ -11,7 +11,7 @@ The Documents API lets you upload, update, and delete custom documents that Ask
 
 ## Usage
 
-To get started, [upload a document, title, and URL via the Documents API](/learn/ask-fern/api-reference/create-document-document-domain-create-post). Here's an example:
+To get started, [upload a document, title, and URL via the Documents API](/learn/ask-fern/api-reference/document/create-document). Here's an example:
 
 ```json wordWrap
 {

fern/products/ask-fern/pages/features/guidance.mdx

@@ -17,7 +17,7 @@ Fern offers an internal CMS (content management system) via the `guidance` API t
 update, and delete guidance as needed. You will need to provide your `domain` to specify which deployment of Ask Fern
 the updates will be applied to.
 
-See the [API reference](/learn/ask-fern/api-reference/create-guidance-guidance-domain-create-post) for more details.
+See the [API reference](/learn/ask-fern/api-reference/guidance/create-guidance) for more details.
 
 ## Usage
 

fern/products/ask-fern/pages/features/slack-app.mdx

@@ -18,7 +18,7 @@ Install the Ask Fern app in your workspace and add the bot to customer channels.
 <Steps>
 <Step title="Get your unique install link">
 
-Use the [API explorer](/ask-fern/api-reference/get-slack-install-link-slack-get-install-get) to get a unique Slack installation link for your organization. Provide:
+Use the [API explorer](/ask-fern/api-reference/slack/get-slack-install-link) to get a unique Slack installation link for your organization. Provide:
 - Your Fern token
 - Your domain without protocol or path (e.g., `website.com`, not `https://website.com/docs`)