Bikeshed: Refer to "webdriver2" instead of "webdriver-2" in the anchor section.

The spec shortname differed between what bikeshed-data and other W3C
databases like Reffy used.

Following the discussion in speced/bikeshed#2416, Bikeshed has
switched to "webdriver2" to align with the other tools.

Author: Raphael Kubo da Costa

index.bs

@@ -89,7 +89,7 @@ urlPrefix: https://w3c.github.io/proximity; spec: PROXIMITY
 spec: webidl; type:dfn; text:attribute
 spec: webidl; type:dfn; text:dictionary member
 spec: webidl; type:dfn; text:identifier
-spec: webdriver-2; type:dfn; text:error
+spec: webdriver2; type:dfn; text:error
 </pre>
 
 <pre class=biblio>