docs: Fix broken links (#1352)

Co-authored-by: Michael Taranto <[email protected]>

Author: askoufis

site/docs/api/add-function-serializer.md

@@ -9,7 +9,7 @@ parent: api
 
 Typically, if you try to export a function from one of your stylesheets, you'll get an error that you can only export plain objects, arrays, strings, numbers and `null`/`undefined`.
 
-If you're wanting to create higher level abstractions like [Sprinkles](../../packages/sprinkles) or [Recipes](../../packages/recipes), this is a big problem!
+If you're wanting to create higher level abstractions like [Sprinkles](/documentation/packages/sprinkles) or [Recipes](/documentation/packages/recipes), this is a big problem!
 
 To address this limitation, the `addFunctionSerializer` utility allows you to annotate your functions with instructions on how to serialize them.
 

site/docs/packages/recipes.md

@@ -9,7 +9,7 @@ Create multi-variant styles with a type-safe runtime API, heavily inspired by [S
 
 As with the rest of vanilla-extract, all styles are generated at build time.
 
-> 💡 Recipes is an optional package built on top of vanilla-extract using its [function serialization API.](../api/add-function-serializer) It doesn't have privileged access to vanilla-extract internals so you're also free to build alternative implementations.
+> 💡 Recipes is an optional package built on top of vanilla-extract using its [function serialization API.](/documentation/api/add-function-serializer) It doesn't have privileged access to vanilla-extract internals so you're also free to build alternative implementations.
 
 ## Setup
 

site/docs/packages/sprinkles.md

@@ -11,7 +11,7 @@ Generate a static set of custom utility classes and compose them either statical
 
 Basically, it’s like building your own zero-runtime, type-safe version of [Tailwind], [Styled System], etc.
 
-> 💡 Sprinkles is an optional package built on top of vanilla-extract using its [function serialization API.](../api/add-function-serializer) It doesn't have privileged access to vanilla-extract internals so you're also free to build alternative implementations, e.g. [Rainbow Sprinkles.](https://github.com/wayfair/rainbow-sprinkles)
+> 💡 Sprinkles is an optional package built on top of vanilla-extract using its [function serialization API.](/documentation/api/add-function-serializer) It doesn't have privileged access to vanilla-extract internals so you're also free to build alternative implementations, e.g. [Rainbow Sprinkles.](https://github.com/wayfair/rainbow-sprinkles)
 
 ## Setup