[css-fonts-4] add missing small-caps value to font-synthesis w3c#5790

Author: svgeesus

css-fonts-4/Overview.bs

@@ -1512,7 +1512,7 @@ Controlling synthetic faces: the 'font-synthesis' shorthand</h4>
 
 	<pre class="propdef">
 	Name: font-synthesis
-	Value: none | [ weight || style ]
+	Value: none | [ weight || style || small-caps]
 	Initial: weight style small-caps
 	Applies to: all elements and text
 	Inherited: yes
@@ -1521,32 +1521,58 @@ Controlling synthetic faces: the 'font-synthesis' shorthand</h4>
 	Animation type: discrete
 	</pre>
 
-	This property is a shorthand for the 'font-synthesis-weight'
-    and 'font-synthesis-style' properties. Values are mapped as following:
+	This property is a shorthand for the 'font-synthesis-weight',
+	'font-synthesis-style', and
+	'font-synthesis-small-caps' properties. Values are mapped as following:
 
     <table class='data'>
     <thead>
         <tr>
             <th>'font-synthesis' value
             <th>'font-synthesis-weight' value
             <th>'font-synthesis-style' value
+			<th>'font-synthesis-small-caps' value</th>
     <tbody>
         <tr>
             <th>none
             <td>none
             <td>none
+			<td>none
         <tr>
             <th>weight
             <td>auto
             <td>none
+			<td>none
         <tr>
             <th>style
             <td>none
             <td>auto
+			<td>none
+		<tr>
+			<th>small-caps
+			<td>none
+			<td>none
+			<td>auto
         <tr>
             <th>weight style
             <td>auto
             <td>auto
+			<td>none
+		<tr>
+			<th>weight small-caps
+			<td>auto
+			<td>none
+			<td>auto
+		<tr>
+			<th>style small-caps
+			<td>none
+			<td>auto
+			<td>auto
+		<tr>
+			<th>weight style small-caps
+			<td>auto
+			<td>auto
+			<td>auto
     </table>
 
 	<div class="example">