Twenty Eleven: Correct `linear-gradient` direction argument syntax.

In CSS, the `linear-gradient` function requires that the direction value explicitly use `to` instead of an implicit `from`.

Props: ianbelanger, Malae, man4toman.
Fixes #46770.
Built from https://develop.svn.wordpress.org/trunk@45109


git-svn-id: http://core.svn.wordpress.org/trunk@44918 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyeleven/colors/dark.css

@@ -335,7 +335,7 @@ section.feature-image.large img {
 	background: -o-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,1) 100%); /* Opera11.10+ */
 	background: -ms-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,1) 100%); /* IE10+ */
 	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00000000', endColorstr='#000000',GradientType=0 ); /* IE6-9 */
-	background: linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,1) 100%); /* W3C */
+	background: linear-gradient(to bottom, rgba(0,0,0,0) 0%,rgba(0,0,0,1) 100%); /* W3C */
 }
 .feature-slider a {
 	background: #c3c3c3;

wp-content/themes/twentyeleven/style.css

@@ -1584,7 +1584,7 @@ section.feature-image.large img {
 	background: -o-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%); /* Opera11.10+ */
 	background: -ms-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%); /* IE10+ */
 	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#ffffff',GradientType=0 ); /* IE6-9 */
-	background: linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%); /* W3C */
+	background: linear-gradient(to bottom, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%); /* W3C */
 	width: 100%;
 	height: 45px;
 	position: absolute;

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-beta1-45108';
+$wp_version = '5.2-beta1-45109';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.