Twenty Nineteen: Fix inconsistent tab/space indentation in style files.

Props iamdmitrymayorov, mukesh27.
Fixes #46821.

git-svn-id: https://develop.svn.wordpress.org/trunk@45132 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentynineteen/sass/navigation/_menu-main-navigation.scss

@@ -26,7 +26,8 @@
 		background: transparent;
 		color: inherit;
 		cursor: pointer;
-		transition: background 250ms ease-in-out,
+		transition:
+			background 250ms ease-in-out,
 			transform 150ms ease;
 		-webkit-appearance: none;
 		-moz-appearance: none;