[css-values-3] Fix typos

Author: lahmatiy

css-values-3/Overview.bs

@@ -106,7 +106,7 @@ Component Value Types</h3>
 			and also does not include any top-level <a href="#mult-comma">comma-separated-list multiplier</a>
 			(i.e. if property <css>pairing</css> is defined as <css>[ <<custom-ident>> <<integer>>? ]#</css>,
 			then <<'pairing'>> is equivalent to <css>[ <<custom-ident>> <<integer>>? ]</css>,
-			not <css><<custom-ident>> <<integer>> ]#</css>).
+			not <css>[ <<custom-ident>> <<integer>>? ]#</css>).
 
 		<li>
 			non-terminals that do not share the same name as a property.
@@ -824,7 +824,7 @@ Compatible Units</h4>
 	<dfn export local-lt=compatible>compatible units</dfn>
 	(those related by a static multiplicative factor,
 	like the 96:1 factor between ''px'' and ''in'',
-	or the the computed 'font-size' factor between ''em'' and ''px'')
+	or the computed 'font-size' factor between ''em'' and ''px'')
 	are converted into a single <dfn export local-lt=canonical>canonical unit</dfn>.
 	Each group of compatible units defines which among them is the <a>canonical unit</a>
 	that will be used for serialization.