remove metaphone from the description (#404)

Author: LeeVaughn

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

@@ -573,7 +573,7 @@ The streaming model itself is biased during inference to be more accurate at ide
 
 ### Turn-level boosting
 
-After each turn is completed, an additional metaphone-based boosting pass analyzes the full transcript using your keyterm list. This post-processing step, similar to formatting, provides a second layer of accuracy improvement by examining the complete context of the turn. To enable this component, set `format_turns` to `True`.
+After each turn is completed, an additional boosting pass analyzes the full transcript using your keyterm list. This post-processing step, similar to formatting, provides a second layer of accuracy improvement by examining the complete context of the turn. To enable this component, set `format_turns` to `True`.
 
 Both stages work together to maximize recognition accuracy for your keyterms throughout the streaming process.