Update example in edge.js (#9231)[skip ci]
In particular, change options.useEdgeChromium(true) to options.setEdgeChromium(true).
*
* You may use {@link Options} to specify whether Edge Chromium should be used:
+ * var edge = require('selenium-webdriver/edge');
* var options = new edge.Options();
- * options.useEdgeChromium(true);
+ * options.setEdgeChromium(true);
* // configure browser options ...
+ * let driver = await new Builder()
+ * .forBrowser('MicrosoftEdge')
+ * .setEdgeOptions(options)
+ * .build();
* Note that Chromium-specific {@link Options} will be ignored when using Edge Legacy.
*
