docs: update keyterms prompting to support multilingual streaming

- Remove warning banner from multilingual streaming page that stated keyterms prompting was not supported
- Add note to keyterms prompting page that it supports both English and multilingual streaming models

Co-Authored-By: Ryan Seams <[email protected]>

Author: devin-ai-integration[bot]

fern/pages/02-speech-to-text/universal-streaming/multilingual.mdx

@@ -11,10 +11,6 @@ Multilingual streaming allows you to transcribe audio streams in multiple langua
 
 ## Configuration
 
-<Warning>
-    Keyterms prompting is not supported with multilingual streaming.
-</Warning>
-
 To utilize multilingual streaming, you need to include `"speech_model":"universal-streaming-multilingual"` as a query parameter in the WebSocket URL.
 
 ## Supported languages

fern/pages/02-speech-to-text/universal-streaming/universal-streaming-keyterms.mdx

@@ -1,6 +1,6 @@
 # Keyterms prompting for Universal-Streaming
 
-The keyterms prompting feature helps improve recognition accuracy for specific words and phrases that are important to your use case.
+The keyterms prompting feature helps improve recognition accuracy for specific words and phrases that are important to your use case. Keyterms prompting is supported for both the English and multilingual streaming models.
 
 <Warning>