Merge pull request #2001 from w3c/fix-add-virtual-authenticator-typo

Fix incorrect reference in Add Virtual Authenticator

index.bs

@@ -7892,7 +7892,7 @@ The [=remote end steps=] are:
  1. For each enumerable [=own property=] in |parameters|:
     1. Let |key| be the name of the property.
     1. Let |value| be the result of [=getting a property=] named |key| from |parameters|.
-    1. If there is no matching `key` for |key| in |parameters|, return a [=WebDriver error=] with
+    1. If there is no matching `key` for |key| in [=Authenticator Configuration=], return a [=WebDriver error=] with
         [=WebDriver error code=] [=invalid argument=].
     1. If |value| is not one of the `valid values` for that |key|, return a [=WebDriver error=] with [=WebDriver error code=]
         [=invalid argument=].