[css-fonts-4] Another acknowledgement from Fonts 3 where the related feature was moved to Fonts 4

Author: svgeesus

css-fonts-4/Overview.bs

@@ -8483,7 +8483,7 @@ and prevent their being used.
 	Historically, this has not always been the case.
 	For example, in the early days of the Web it was common to use fonts
 	(such as "Symbol", though others were used)
-	to make Latin letter have Greek glyphs;
+	to make Latin letters have Greek glyphs;
 	while this worked visually,
 	it would not work with a screen reader
 	and text was also hard to search or index
@@ -8514,6 +8514,8 @@ Optical sizing <a href="#optical-size-example">image</a> prepared by Nick Sherma
 John Hudson was kind enough to take the time to explain the subtleties of OpenType language tags 
 and provided the example of character variant usage for displaying text on Byzantine seals.
 
+Elika Etemad supplied some of the initial design ideas for the '@font-feature-values' rule. 
+
 Special thanks to Tab Atkins Jr.
 for providing the text for the section on <a href="#font-rendering-controls">Font Rendering Controls</a>
 as well as the section on the 'font-display!!descriptor' descriptor.