[css-2026] Address IANA reviewer comments for text/css media type registration update #5310

Author: svgeesus

css-2026/Overview.bs

@@ -1009,16 +1009,13 @@ Type name: text
 
 Subtype name: css
 
-Required parameters: none
+Required parameters: N/A
 
 Optional parameters: charset (but see below)
 
 Encoding considerations:
 
-	For use with transports that are not 8-bit clean, quoted-
-	printable encoding is recommended since the majority of
-	characters will be CSS syntax and thus correspond to the
-	US-ASCII-compatible subrange of UTF-8.
+	binary
 
 Security considerations: