Unquoted strings for readability

examples_src/modify-features.html

@@ -1,7 +1,7 @@
 ---
-template: "example.html"
-title: "Modify features example"
-shortdesc: "Editing features with the modify interaction."
+template: example.html
+title: Modify features example
+shortdesc: Editing features with the modify interaction.
 docs: >
   <p>This example demonstrates how the modify and select interactions can be used together.  Zoom in to an area of interest and select a feature for editing.
   Then drag points around to modify the feature.  You can preserve topology by selecting multiple features before editing (<code>Shift</code>+click to select multiple features).</p>