typo fixes

epub33/a11y/index.html

@@ -109,8 +109,8 @@ <h3>Overview</h3>
 					specific user needs so cannot meet broad accessibility requirements. Refer to the requirements for
 					optimized publications in <a href="#sec-optimized-pubs"></a> for more information.</p>
 
-				<p>This specification does not target a single version of EPUB. It applicable to EPUB Publications that
-					conform to any version or profile, including future versions of the standard.</p>
+				<p>This specification does not target a single version of EPUB. It is applicable to EPUB Publications
+					that conform to any version or profile, including future versions of the standard.</p>
 
 				<p>Ideally, these guidelines help evaluate any digital publication built on Open Web technologies,
 					although ensuring such application is outside the scope of this specification.</p>
@@ -146,7 +146,7 @@ <h3>Success Techniques</h3>
 			<section id="sec-application" class="informative">
 				<h3>Application to Older Versions</h3>
 
-				<p>This specification applicable to any EPUB Publication, even if the content conforms to an older
+				<p>This specification is applicable to any EPUB Publication, even if the content conforms to an older
 					version of EPUB that does not refer to this specification (e.g., EPUB 2 [[OPF-201]]).</p>
 
 				<p>Creators of such EPUB Publications should create content in conformance with the accessibility and