Update README.md

Fix typo in installation instructions.

Author: Log1x

README.md

@@ -12,7 +12,7 @@ This can be useful for cleaning up your Edit Post screen with something like ACF
 Install ACF Move WP Editor using Composer:
 
 ```
-$ composer require log1x/move-wp-editor:dev-master
+$ composer require log1x/acf-move-wp-editor
 ```
 
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