Docs: Move `install_network()` DocBlock after the `function_exists()` call.

Props keesiemeijer.
Fixes #39478.
Built from https://develop.svn.wordpress.org/trunk@39709


git-svn-id: http://core.svn.wordpress.org/trunk@39649 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/schema.php

@@ -861,13 +861,12 @@ function populate_roles_300() {
 	}
 }
 
+if ( !function_exists( 'install_network' ) ) :
 /**
  * Install Network.
  *
  * @since 3.0.0
- *
  */
-if ( !function_exists( 'install_network' ) ) :
 function install_network() {
 	if ( ! defined( 'WP_INSTALLING_NETWORK' ) )
 		define( 'WP_INSTALLING_NETWORK', true );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-39708';
+$wp_version = '4.8-alpha-39709';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.