Fix editing of export-map example on codesandbox

examples/export-map.html

@@ -5,6 +5,9 @@ shortdesc: Example of exporting a map as a PNG image.
 docs: >
   Example of exporting a map as a PNG image.
 tags: "export, png, openstreetmap"
+resources:
+  - https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css
+  - https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css
 ---
 <div id="map" class="map"></div>
 <a id="export-png" class="btn btn-default"><i class="fa fa-download"></i> Download PNG</a>

examples/webpack/example-builder.js

@@ -16,7 +16,7 @@ const isJsRegEx = /\.js(\?.*)?$/;
 const importRegEx = /\s?import .*? from '([^']+)'/g;
 const isTemplateJs =
   /\/(jquery(-\d+\.\d+\.\d+)?|(bootstrap(\.bundle)?))(\.min)?\.js(\?.*)?$/;
-const isTemplateCss = /\/bootstrap(\.min)?\.css(\?.*)?$/;
+const isTemplateCss = /\/(?:bootstrap|font-awesome)(\.min)?\.css(\?.*)?$/;
 
 const exampleDirContents = fs
   .readdirSync(path.join(baseDir, '..'))