Update docs/index.rst

Co-authored-by: Benjamin Georgeault <[email protected]>

Author: alexislefebvre

docs/index.rst

@@ -43,7 +43,7 @@ optional arguments and options. Check them out with the ``--help`` option:
 
 .. caution::
 
-    ``make:entity`` requires Doctrine to be installed and configured.
+    ``make:entity`` requires ``doctrine/orm`` to be installed and configured. This maker support only ORM, not ODM.
 
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