Fix link text to 1.4.3 in 1.4.11 (#3953)

Link text was "1.4.3 (Text) Contrast" instead of "1.4.3 Contrast
(Minimum)"

Author: fstrr

understanding/21/non-text-contrast.html

@@ -426,11 +426,11 @@ <h4>Infographics</h4>
 				<ul>
 					<li><a href="non-text-content" class="sc">1.1.1 Non-text Content</a></li>
 					<li><a href="use-of-color" class="sc">1.4.1 Use of Color</a></li>
-					<li><a href="contrast-minimum" class="sc">1.4.3 (Text) Contrast</a></li>
+					<li><a href="contrast-minimum" class="sc">1.4.3 Contrast (Minimum)</a></li>
 					<li><a href="images-of-text" class="sc">1.4.5 Images of Text</a></li>
 				</ul>
 
-				<p>An infographic can use text which meets the other criteria to minimise the number of graphical objects required for understanding. For example, using text with sufficient contrast to provide the values in a chart. A long description would also be sufficient because then the infograph is not relied upon for understanding.</p>
+				<p>An infographic can use text which meets the other criteria to minimise the number of graphical objects required for understanding. For example, using text with sufficient contrast to provide the values in a chart. A long description would also be sufficient because then the infographic is not relied upon for understanding.</p>
 
 				</section>