Use most-specific "Contexts in which this element can be used"

The specification states that the most-specific context is to be listed
in the element description. These elements were not following that rule.

source

@@ -15286,7 +15286,7 @@ interface <dfn>HTMLBodyElement</dfn> : <span>HTMLElement</span> {
    <dd><span>Sectioning content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
-   <dd>Where <span>flow content</span> is expected.</dd>
+   <dd>Where <span>sectioning content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd><span>Flow content</span>.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
@@ -15433,7 +15433,7 @@ interface <dfn>HTMLBodyElement</dfn> : <span>HTMLElement</span> {
    <dd><span>Sectioning content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
-   <dd>Where <span>flow content</span> is expected.</dd>
+   <dd>Where <span>sectioning content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd><span>Flow content</span>.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
@@ -15599,7 +15599,7 @@ interface <dfn>HTMLBodyElement</dfn> : <span>HTMLElement</span> {
    <dd><span>Sectioning content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
-   <dd>Where <span>flow content</span> is expected.</dd>
+   <dd>Where <span>sectioning content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd><span>Flow content</span>.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
@@ -15780,7 +15780,7 @@ interface <dfn>HTMLBodyElement</dfn> : <span>HTMLElement</span> {
    <dd><span>Sectioning content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
-   <dd>Where <span>flow content</span> is expected.</dd>
+   <dd>Where <span>sectioning content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd><span>Flow content</span>.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
@@ -15932,7 +15932,7 @@ isn't his only passion. He also enjoys other pleasures.&lt;/p>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
    <dd>As a child of an <code>hgroup</code> element.</dd>
-   <dd>Where <span>flow content</span> or <span>heading content</span> is expected.</dd>
+   <dd>Where <span>heading content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd><span>Phrasing content</span>.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
@@ -16035,7 +16035,7 @@ interface <dfn>HTMLHeadingElement</dfn> : <span>HTMLElement</span> {
    <dd><span>Heading content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
-   <dd>Where <span>flow content</span> or <span>heading content</span> is expected.</dd>
+   <dd>Where <span>heading content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
    <dd>One or more <code>h1</code>, <code>h2</code>, <code>h3</code>, <code>h4</code>,
    <code>h5</code>, <code>h6</code> elements, optionally intermixed with <span>script-supporting