Fix explainer typos

index.html

@@ -126,7 +126,7 @@ <h3>Severe Language Impairment</h3>
 			<p>User Stories include:</p>
 			<ul>
 			<li>An assisted living home authors adult education courses and life-skills content, for example, how to make dinner using a microwave. Within their core user-base, users are accustomed to different symbol sets. The authors want to create content for all users across various symbol sets.</li>
-			<li>A large banking site wants people to be as autonomous as possible while using their services. They provide augmented symbol references onto their core services. They need a mechanism to programmatically support multiple symbol sets witin the code. </li>
+			<li>A large banking site wants people to be as autonomous as possible while using their services. They provide augmented symbol references onto their core services. They need a mechanism to programmatically support multiple symbol sets within the code. </li>
 			<li>People who know different symbol sets wish to talk to each other.</li>
 			<li>A government agency creating information sheets about human rights and patient rights are seeking feedback from impacted users. They add symbols from a common symbol set to support a majority of different users. The agency would prefer to use a common symbol reference to support people who use or require different symbols. This allows all symbol set users to both read and edit the content.	</li>
 			</ul>
@@ -158,7 +158,7 @@ <h4>Proof of Concept: Symbol Example</h4>
 
 		<section class="section" id="memory_impairment">
 			<h3>Working Memory and Short-term Memory Impairment</h3>
-			<p>Users may have differences in both working and short-term memory.  For some users the number of items that can be held in working memory is a fraction of the amound most users can hold in memory. Whereas most adults can repeat about seven digits in correct order, some users may only manage two or three digits. When these users become distracted, they are also likely to forget any information in their working memory.</p>
+			<p>Users may have differences in both working and short-term memory.  For some users the number of items that can be held in working memory is a fraction of the amount most users can hold in memory. Whereas most adults can repeat about seven digits in correct order, some users may only manage two or three digits. When these users become distracted, they are also likely to forget any information in their working memory.</p>
 
 			<div class="example"><p>Example: Many processes consist of a sequence of separate steps or actions which must be performed by a user to complete a process or workflow.</p><p>Users need to remember completed tasks in order to identify their location in a process. In addition, a user must be able to navigate to completed tasks to make modifications or corrections.</p></div>
 
@@ -250,7 +250,7 @@ <h1>Vocabulary Implementations</h1>
 			<section class="section">
 			<h2>Current Usage</h2>
 
-            <p>This publication of the WAI-Adapt provides several <em>key-value pairs</em> (attribute = value). These attributes include but are not limted to:</p>
+            <p>This publication of the WAI-Adapt provides several <em>key-value pairs</em> (attribute = value). These attributes include but are not limited to:</p>
             <ul>
                 <li><a href="symbols/#action-explanation">adapt-action</a></li>
                 <li><a href="symbols/#destination-explanation">adapt-destination</a></li>