Fix typo in `wp_rand()` docs.

See #28633.
Built from https://develop.svn.wordpress.org/trunk@34986


git-svn-id: http://core.svn.wordpress.org/trunk@34951 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/pluggable.php

@@ -2138,7 +2138,7 @@ if ( !function_exists('wp_rand') ) :
  * Generates a random number
  *
  * @since 2.6.2
- * @since 4.4 Uses PHP7 random_int() or the random_compat library if avaialble.
+ * @since 4.4.0 Uses PHP7 random_int() or the random_compat library if available.
  *
  * @global string $rnd_value
  * @staticvar string $seed

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34985';
+$wp_version = '4.4-alpha-34986';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.