Update env-example

Author: SDLyu

env-example

@@ -31,7 +31,7 @@ COMPOSE_PATH_SEPARATOR=:
 
 ### PHP Version ###########################################
 
-# Select a PHP version of the Workspace and PHP-FPM containers (Does not apply to HHVM). Accepted values: 7.2 - 7.1 - 7.0 - 5.6 - 5.5
+# Select a PHP version of the Workspace and PHP-FPM containers (Does not apply to HHVM). Accepted values: 7.2 - 7.1 - 7.0 - 5.6
 PHP_VERSION=7.2
 
 ### PHP Interpreter #######################################