DevTools: [Documentation] Update empty page style

Source/devtools/front_end/documentation/DocumentationView.js

Index: Source/devtools/front_end/documentation/DocumentationView.js
diff --git a/Source/devtools/front_end/documentation/DocumentationView.js b/Source/devtools/front_end/documentation/DocumentationView.js
index be3a3bf6d60ef5376bb20f9998454ebb1a5c3bd7..e9ce67a045719a85d94c0e618491a9ce95dacbb6 100644
--- a/Source/devtools/front_end/documentation/DocumentationView.js
+++ b/Source/devtools/front_end/documentation/DocumentationView.js
@@ -75,8 +75,10 @@ WebInspector.DocumentationView.prototype = {
     _createEmptyPage: function()
     {
         this.element.removeChildren();
-        var pageTitle = this.element.createChild("div", "documentation-page-title");
-        pageTitle.textContent = WebInspector.UIString("Documentation not available");
+        var emptyPage = this.element.createChild("div", "documentation-empty-page fill");
+        var pageTitle = emptyPage.createChild("div", "documentation-not-found");
+        pageTitle.textContent = "No documentation found.";
+        emptyPage.createChild("div", "documentation-empty-page-align");
     },
 
     __proto__: WebInspector.View.prototype