[css-values] We have no idea why calc() mentions a comma operator.

Author: tabatkins

css-values/Overview.html

@@ -1583,12 +1583,12 @@ <h4 id=calc-type-checking><span class=secno>8.1.2. </span> Type Checking</h4>
    operators for simplicity):
 
   <ul>
-   <li> At ‘<code class=css>,</code>’, ‘<code class=css>+</code>’, or
-    ‘<code class=css>-</code>’, check that both sides have the same type,
-    or that one side is a <a href="#number-value"><var>&lt;number></var></a>
-    and the other is an <a href="#integer-value"><var>&lt;integer></var></a>.
-    If both sides are the same type, resolve to that type. If one side is a
-    <a href="#number-value"><var>&lt;number></var></a> and the other is an <a
+   <li> At ‘<code class=css>+</code>’ or ‘<code class=css>-</code>’,
+    check that both sides have the same type, or that one side is a <a
+    href="#number-value"><var>&lt;number></var></a> and the other is an <a
+    href="#integer-value"><var>&lt;integer></var></a>. If both sides are the
+    same type, resolve to that type. If one side is a <a
+    href="#number-value"><var>&lt;number></var></a> and the other is an <a
     href="#integer-value"><var>&lt;integer></var></a>, resolve to <a
     href="#number-value"><var>&lt;number></var></a>.
 

css-values/Overview.src.html

@@ -1112,7 +1112,7 @@ <h4 id='calc-type-checking'>
 
 	<ul>
 		<li>
-			At '','', ''+'', or ''-'',
+			At ''+'' or ''-'',
 			check that both sides have the same type,
 			or that one side is a <var>&lt;number></var> and the other is an <var>&lt;integer></var>.
 			If both sides are the same type,