graphics() improved vendor, model parsing (linux), memLayout() DDR5 detection (windows)

docs/graphics.html

@@ -95,7 +95,17 @@
                       <td>X</td>
                       <td>X</td>
                       <td></td>
-                      <td>e.g. ATI</td>
+                      <td>Chip manufacturer e.g. NVIDIA</td>
+                    </tr>
+                    <tr>
+                      <td></td>
+                      <td>...[0].subvendor</td>
+                      <td>X</td>
+                      <td></td>
+                      <td></td>
+                      <td></td>
+                      <td></td>
+                      <td>Subvendor e.g. Gigabyte</td>
                     </tr>
                     <tr>
                       <td></td>
@@ -649,4 +659,4 @@ si.graphics().then(data => console.log(data));</code></pre class="example">
   </script>
 </body>
 
-</html>
+</html>