Split Language Detection page into two pages under Languages section

Co-Authored-By: Lee Vaughn <dlvprogramming@gmail.com>

Author: devin-ai-integration[bot]

fern/docs.yml

@@ -97,8 +97,13 @@ navigation:
                 path: pages/02-speech-to-text/pre-recorded-audio/multichannel-transcription.mdx
               - page: Code switching
                 path: pages/02-speech-to-text/pre-recorded-audio/code-switching-docs.mdx
-              - page: Language detection
-                path: pages/02-speech-to-text/pre-recorded-audio/language-detection.mdx
+              - section: Languages
+                skip-slug: true
+                contents:
+                  - page: Automatic language detection
+                    path: pages/02-speech-to-text/pre-recorded-audio/automatic-language-detection.mdx
+                  - page: Set language manually
+                    path: pages/02-speech-to-text/pre-recorded-audio/set-language-manually.mdx
               - page: Custom spelling
                 path: pages/02-speech-to-text/pre-recorded-audio/custom-spelling.mdx
               - page: Filler words