Add hidden (#264)

Co-authored-by: Griffin Sharp <[email protected]>

Author: gsharp-aai

fern/docs.yml

@@ -264,6 +264,7 @@ navigation:
               - page: Migration guide Gladia to AssemblyAI
                 path: pages/05-guides/cookbooks/core-transcription/gladia_to_aai.mdx
                 slug: gladia_to_aai
+                hidden: true
               - page: Boost Transcription Accuracy with LeMUR (LeMUR Custom Vocab)
                 path: pages/05-guides/cookbooks/lemur/custom-vocab-lemur.mdx
                 slug: custom-vocab-lemur