Fix version (#157)

Author: xxsimoxx

classicpress-seo.php

@@ -3,7 +3,7 @@
  * Plugin Name:          Classic SEO
  * Plugin URI:           https://github.com/ClassicPress/classicpress-seo
  * Description:          Classic SEO is the first SEO plugin built specifically to work with ClassicPress. The plugin contains many essential SEO tools to help optimize your website.
- * Version:              2.2.0.alpha.0
+ * Version:              2.2.0-alpha.0
  * Author:               ClassicPress
  * Author URI:           https://github.com/ClassicPress
  * License:              GPL v2 or later

readme.txt

@@ -1,7 +1,7 @@
 == Classic SEO ==
 
 Description:       Classic SEO is the first SEO plugin built specifically to work with ClassicPress. The plugin contains many essential SEO tools to help optimize your website.
-Version:           2.2.0.alpha.0
+Version:           2.2.0-alpha.0
 Text Domain:       cpseo
 Domain Path:       /languages
 Requires PHP:      7.0