message: Fix typo in drush-9.md
  Fixed typo in Preparation step
diff: @@ -18,7 +18,7 @@ Drush 9 provides a new command, `drush site:alias-convert` , which can convert D
  In order to be able to use `drush site:alias-convert` , you need to do the following:
  -* Rename the `aliases.drushrc.php` inside the `drush` folder to `lagooncd ...aliases.drushrc.php`.
  +* Rename the `aliases.drushrc.php` inside the `drush` folder to `lagoon.aliases.drushrc.php`.
  ### Generate Site Aliases
  