fix(update) we need to tell people apt install...

 fix(update) we need to tell people apt install fusiondirectory-tools to update theirs tools first in the upgrade section

Signed-off-by: Benoit Mortier <benoit.mortier@fusiondirectory.org>

source/fusiondirectory/update/supported/1.4-to-1.5.rst

 Migrate FusionDirectory from 1.4 to 1.5
 =======================================
 
-Upgrade FusionDirectory first
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Upgrade FusionDirectory Tools First
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Upgrade the fusiondirectory-tools to get the latest version of the fusiondirectory-tools
+
+.. code-block:: shell
+
+   apt-get install fusiondirectory-tools
+
+Upgrade FusionDirectory
+^^^^^^^^^^^^^^^^^^^^^^^
 
 Upgrade FusionDirectory core package before other ones to avoid
 dependencies errors: