ISSUE-587/ACTION-1548: aria-current edits

* Make agreed-upon changes to the example text
* Correct two instances of lowercase MUSTS
* Spell "flowchart" as "flow chart"

Author: joanmarie

aria/aria.html

@@ -7986,14 +7986,14 @@ <h2>Definitions of States and Properties (all aria-* attributes)</h2>
 			<sdef>aria-current</sdef>
 			<div class="state-description">
 				<p>[ARIA 1.1] Indicates the <a title="element">element</a> that represents the current item within a container or set of related elements.</p>
-				<p>The <aref>aria-current</aref> <a>attribute</a> is an enumerated type. Any <a>value</a> not included in the list of allowed values must be treated by <a title="user agent">user agents</a> as if the value <code>true</code> had been provided. If the attribute is not present or its value is an empty string, the default value of <code>false</code> applies and the <aref>aria-current</aref> <a>state</a> must not be exposed by user agents or <a>assistive technologies</a>.</p>
+				<p>The <aref>aria-current</aref> <a>attribute</a> is an enumerated type. Any <a>value</a> not included in the list of allowed values MUST be treated by <a title="user agent">user agents</a> as if the value <code>true</code> had been provided. If the attribute is not present or its value is an empty string, the default value of <code>false</code> applies and the <aref>aria-current</aref> <a>state</a> MUST NOT be exposed by user agents or <a>assistive technologies</a>.</p>
 				<p>The <aref>aria-current</aref> attribute is used when an element within a set of related elements is visually styled to indicate it is the current item in the set. For example:</p>
 				<ul>
-					<li>The <code>page</code> token could be used to indicate a link within a set of pagination links, where the link is visually styled to represent the currently-displayed page.</li>
-					<li>The <code>step</code> token could be used to indicate a link within a step indicator for a step-based process, where the link is visually styled to represent the current step.</li>
-					<li>The <code>location</code> token could be used to indicate the image that is visually highlighted as the current component of a flowchart.</li>
-					<li>The <code>date</code> token could be used to indicate the current date within a calendar.</li>
-					<li>The <code>time</code> token could be used to indicate the current time within a timetable.</li>
+					<li>A <code>page</code> token used to indicate a link within a set of pagination links, where the link is visually styled to represent the currently-displayed page.</li>
+					<li>A <code>step</code> token used to indicate a link within a step indicator for a step-based process, where the link is visually styled to represent the current step.</li>
+					<li>A <code>location</code> token used to indicate the image that is visually highlighted as the current component of a flow chart.</li>
+					<li>A <code>date</code> token used to indicate the current date within a calendar.</li>
+					<li>A <code>time</code> token used to indicate the current time within a timetable.</li>
 				</ul>
 				<p class="note">The <aref>aria-current</aref> attribute is similar to the <sref>aria-selected</sref> attribute, but there are important differences. For example in a <rref>listbox</rref> <a>widget</a> for choosing between pages of search results, <aref>aria-current</aref> would be used to indicate the option representing the currently displayed page of results, whereas <sref>aria-selected</sref> would be used to indicate the page of results the user had selected to be displayed next.</p>
 			<table class="state-features">