[css-fonts-4] Confusing informative note about matching font family names

#1466

Author: Litherum

css-fonts-4/Overview.bs

@@ -1836,7 +1836,7 @@ at least as dark as its predecessor. Only values greater than 0 and less than 10
 	Authors should take care to ensure that names use a character sequence
 	consistent with the actual font family name, particularly when using
 	combining characters such as diacritical marks. For example, a family
-	name that contains an uppercase A (U+0041) followed by a combining
+	name that contains a lowercase a (U+0061) followed by a combining
 	ring (U+030A) will <strong>not</strong> match a name that looks
 	identical but which uses the precomposed lowercase a-ring character
 	(U+00E5) instead of the combining sequence.</p>