Fix broken anchor links in documentation (#2936)

Co-authored-by: fern-api[bot] <115122769+fern-api[bot]@users.noreply.github.com>
Co-authored-by: Devin Logan <[email protected]>

Author: 3 people

fern/products/api-def/openapi-pages/auth.mdx

@@ -210,7 +210,7 @@ api:
 ```
 
 <Info title="Endpoint configuration and token refresh">
-The `endpoint` values (e.g., `"POST /oauth/token"`) reference paths defined in your OpenAPI specification. When `expires-in` is returned, the SDK will automatically refresh tokens before they expire. For more details on OAuth configuration options, see the [Auth scheme reference](#oauth-authentication) below.
+The `endpoint` values (e.g., `"POST /oauth/token"`) reference paths defined in your OpenAPI specification. When `expires-in` is returned, the SDK will automatically refresh tokens before they expire. For more details on OAuth configuration options, see the [Auth scheme reference](#auth-scheme-reference) below.
 </Info>
 
 The generated SDK would look like: 

fern/products/api-def/pages/project-structure.mdx

@@ -136,7 +136,7 @@ groups:
 
 Use this approach when you want to merge multiple APIs into a single SDK package, with optional namespacing to organize them. This works for both distinct APIs and versioned APIs, though it increases package size as all APIs are bundled together.
 
-For versioned APIs, [namespacing](#add-namespaces-optional) let you access different versions like `client.v1` and `client.v2` within the same package.
+For versioned APIs, namespacing lets you access different versions like `client.v1` and `client.v2` within the same package.
 
 <Steps>
 <Step title="Place each API in separate subfolders">

fern/products/docs/pages/navigation/changelogs.mdx

@@ -90,7 +90,7 @@ navigation:
 </CodeBlock>
 
 <Note>
-Section-level changelogs **cannot** be nested within an `api` entry. See [API-level changelogs](#api-level-changelog) to add an API-level entry.
+Section-level changelogs **cannot** be nested within an `api` entry.
 </Note>
 </Accordion>
 </AccordionGroup>