Editorial: correct miscount in definition of 'script'

This was introduced in 3d45584 (whatwg#4898).

Author: Ms2ger

source

@@ -103359,8 +103359,9 @@ document.querySelector("button").addEventListener("click", bound);
 
   <h5 id="script-structs"><span id="definitions-2"></span>Scripts</h5>
 
-  <p>A <dfn data-x="concept-script" export>script</dfn> is one of three possible <span
-  data-x="struct">structs</span>. All scripts have:</p>
+  <p>A <dfn data-x="concept-script" export>script</dfn> is one of two possible <span
+  data-x="struct">structs</span> (namely, a <span>classic script</span> or a
+  <span>module script</span>). All scripts have:</p>
 
   <dl>
    <dt>A <dfn for="script" data-x="concept-script-realm">realm</dfn></dt>