Added images and photographs and alt text in nonvisual reading section

a11y-meta-display-guide/2.0/draft/guidelines/index.html

@@ -480,10 +480,10 @@ <h3 data-localization-id="nonvisual-reading-title">Supports nonvisual reading</h
 
 				<p>This field answers whether nonvisual reading is possible, not possible, or unknown.</p>
 
-				<p>Digital publications with essential content included in non-textual form (such as graphs, tables or
+				<p>Digital publications with essential content included in non-textual form (such as images, photographs, graphs, tables or
 					equations presented as images, videos, etc.) must include textual alternatives to ensure that users
 					reading with other senses than sight (mainly auditory and tactile) have access to the same
-					information as visual readers. These textual alternatives can include extended descriptions,
+					information as visual readers. These textual alternatives can include alt text on images, extended descriptions,
 					transcripts, captions, etc. depending on the nature of the nonvisual content.</p>
 
 				<section id="nv-examples">