Remove extra whitespace (drupal-composer#371)

Author: zaporylie

.env.example

@@ -6,7 +6,7 @@
 # like so:
 #
 # $databases['default']['default'] = [
-#   'database' =>  getenv('MYSQL_DATABASE'),
+#   'database' => getenv('MYSQL_DATABASE'),
 #   'driver' => 'mysql',
 #   'host' => getenv('MYSQL_HOSTNAME'),
 #   'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
@@ -24,4 +24,4 @@
 # MYSQL_USER=
 
 # Another common use case is to set Drush's --uri via environment.
-# DRUSH_OPTIONS_URI=http://example.com
+# DRUSH_OPTIONS_URI=http://example.com