Fix priv argument in example.

Should be "priv", not "privs". Was correct in table, but wrong in
examples.

rst/modules/postgresql_user.rst

@@ -57,9 +57,9 @@ Example privileges string format:
 Example action from Ansible :doc:`playbooks`::
 
     - name: Create django user and grant access to database and products table
-      postgresql_user db=acme user=django password=ceec4eif7ya privs=CONNECT/products:ALL
+      postgresql_user db=acme user=django password=ceec4eif7ya priv=CONNECT/products:ALL
 
     - name: Remove test user privileges from acme
-      postgresql_user db=acme user=test privs=ALL/products:ALL state=absent fail_on_user=no
+      postgresql_user db=acme user=test priv=ALL/products:ALL state=absent fail_on_user=no
     - name: Remove test user from test database and the cluster
-      postgresql_user db=test user=test privs=ALL state=absent
+      postgresql_user db=test user=test priv=ALL state=absent