Buttons: Fixed Typos

Author: sfrisk

demos/buttons.html

@@ -14,7 +14,7 @@
 
 <h1>CSS Chassis</h1>
 
-<h2>Button tag</h2>
+<h2>Button Classes</h2>
 
 <p>Use the button classes on an <code>&lt;a&gt;</code>, <code>&lt;button&gt;</code>, or <code>&lt;input&gt;</code> element.
 
@@ -99,7 +99,7 @@ <h3>Disabled Class</h3>
 		<a class="ui-button--default--disabled" href="#" role="button">Disabled</a>
 	</p>
 	<p>
-		<a class="ui-button--primary--small--disabled" href="#" role="button">Disabled/a>
+		<a class="ui-button--primary--small--disabled" href="#" role="button">Disabled</a>
 		<a class="ui-button--default--small--disabled" href="#" role="button">Disabled</a>
 	</p>
 	<p>

scss/atoms/buttons/_buttons.scss

@@ -97,8 +97,8 @@
 		}
 
 		&--extra-small {
-			@extend %ui-button--extra-small;
 			@include ui-button($ui-button-default-color, $ui-button-default-background);
+			@include ui-button-sizes($ui-button-extra-small);
 			@include ui-button-states($ui-button-default-color, $ui-button-default-background);
 
 			&--disabled {