Index: src/wp-admin/_index.php
===================================================================
--- src/wp-admin/_index.php	(revision 51985)
+++ src/wp-admin/_index.php	(working copy)
@@ -107,22 +107,22 @@
 
 unset( $help );
 
-$wp_version     = get_bloginfo( 'version', 'display' );
-$is_dev_version = preg_match( '/alpha|beta|RC/', $wp_version );
+$wp_version = get_bloginfo( 'version', 'display' );
+/* translators: %s: WordPress version. */
+$wp_version_text = sprintf( __( 'Version %s' ), $wp_version );
+$is_dev_version  = preg_match( '/alpha|beta|RC/', $wp_version );
 
-if ( $is_dev_version ) {
-	/* translators: %s. The WordPress version. */
-	$wp_version_text = sprintf( __( 'Version %s' ), $wp_version );
-} else {
+if ( ! $is_dev_version ) {
+	$version_url = sprintf(
+		/* translators: %s: WordPress version. */
+		esc_url( __( 'https://wordpress.org/support/wordpress-version/version-%s/' ) ),
+		sanitize_title( $wp_version )
+	);
+
 	$wp_version_text = sprintf(
-		/*
-		 * translators:
-		 * 1. A link to the changelog ending with the WordPress version where '.' is replaced by '-'.
-		 * 2. The WordPress version.
-		 */
-		__( '<a href="%1$s">Version %2$s</a>' ),
-		esc_url( 'https://wordpress.org/support/wordpress-version/version-' . str_replace( '.', '-', $wp_version ) ),
-		$wp_version
+		'<a href="%1$s">%2$s</a>',
+		$version_url,
+		$wp_version_text
 	);
 }