Clarify released speech search limitations

README.md

@@ -219,7 +219,7 @@ files, so protect it as you would the files themselves.
 **Media search is experimental.** Image, audio and video search are implemented,
 but relevance still needs improvement. Music descriptions can produce broad
 matches; use exact artist/title filters when you know the tags. Video sampling
-can miss a brief scene. In the upcoming speech feature, recognized text can
+can miss a brief scene. In speech search, recognized text can
 contain errors or miss words, and timestamps are estimates rather than verified
 word positions. When your files contain no suitable match, semantic search may
 still show the closest results; a returned result does not prove the requested