Editorial: correct placement of either

Author: annevk

source

@@ -74312,7 +74312,7 @@ dictionary <dfn dictionary>ElementDefinitionOptions</dfn> {
    <dd>Each <span>inclusive descendant</span> of <var>root</var> with a null registry will have it
    updated to this <code>CustomElementRegistry</code> object. A
    <span>"<code>NotSupportedError</code>"</span> <code>DOMException</code> will be thrown if this
-   <code>CustomElementRegistry</code> object is not for scoped usage and <var>root</var> is either a
+   <code>CustomElementRegistry</code> object is not for scoped usage and either <var>root</var> is a
    <code>Document</code> node or <var>root</var>'s <span>node document</span>'s <span
    data-x="document-custom-element-registry">custom element registry</span> is not this
    <code>CustomElementRegistry</code> object.</dd>
@@ -74664,7 +74664,7 @@ console.assert(el instanceof SpiderMan);    // upgraded!</code></pre>
   steps are:</p>
 
   <ol>
-   <li><p>If <span>this</span>'s <span>is scoped</span> is false and <var>root</var> is either a
+   <li><p>If <span>this</span>'s <span>is scoped</span> is false and either <var>root</var> is a
    <code>Document</code> node or <var>root</var>'s <span>node document</span>'s <span
    data-x="document-custom-element-registry">custom element registry</span> is not
    <span>this</span>, then throw a <span>"<code>NotSupportedError</code>"</span>