Actions: minor clean up to link to active input sources

This matches the intent of the text.

Author: shs96c

webdriver-spec.html

@@ -6736,7 +6736,7 @@ <h2>Input Source State</h2>
 <p>Each <a>session</a> has an associated <dfn>input state table</dfn>.
  This is a map between <a>input id</a>
  and the <a>input source state</a> for that <a>input source</a>,
- with one entry for each active <a>input source</a>.
+ with one entry for each item in the list of <a>active input sources</a>.
 
 <p>Each <a>session</a> also has an associated <dfn>input cancel
  list</dfn>, which is a list of actions. This list is used to manage