Avoid conflicting label

Signed-off-by: Michal Čihař <michal@cihar.com>

docs/admin/install.rst

@@ -371,7 +371,7 @@ options:
 
     .. seealso:: `SERVER_EMAIL documentation`_
 
-.. _database-setup:
+.. _tables-setup:
 
 Filling up the database
 -----------------------

docs/admin/quick.rst

@@ -23,7 +23,7 @@ Installing from sources
 #. Create database which will be used by Weblate, :ref:`database-setup`.
 
 #. Build Django tables, static files and initial data (see
-   :ref:`database-setup` and :ref:`static-files`):
+   :ref:`tables-setup` and :ref:`static-files`):
 
    .. code-block:: sh