Merge pull request #23592 from dart-lang/sethladd-patch-5

one-line description for SVG

tools/dom/templates/html/dartium/svg_dartium.darttemplate

@@ -1,6 +1,14 @@
 // DO NOT EDIT
 // Auto-generated dart:svg library.
 
+/**
+ * Scalable Vector Graphics:
+ * Two-dimensional vector graphics with support for events and animation.
+ *
+ * For details about the features and syntax of SVG, a W3C standard,
+ * refer to the
+ * [Scalable Vector Graphics Specification](http://www.w3.org/TR/SVG/).
+ */
 library dart.dom.svg;
 
 import 'dart:async';