Misc/NEWS: Add a news item for UNIX Sockets support in asyncio. Cleanup WS.

Misc/NEWS

@@ -41,13 +41,17 @@ Library
   Based on patch by Stephen Tu.
 
 - Issue #8478: Untokenizer.compat processes first token from iterator input.
-  Patch based on lines from Georg Brandl, Eric Snow, and Gareth Rees.  
+  Patch based on lines from Georg Brandl, Eric Snow, and Gareth Rees.
 
 - Issue #20594: Avoid name clash with the libc function posix_close.
 
 - Issue #19856: shutil.move() failed to move a directory to other directory
   on Windows if source name ends with os.altsep.
 
+- Issue #20673: Implement support for UNIX Domain Sockets in asyncio.
+  New APIs: loop.create_unix_connection(), loop.create_unix_server(),
+  streams.open_unix_connection(), and streams.start_unix_server().
+
 Tests
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