Fix incorrect literal_block error when build docs
This causes failure when use build_sphinx to generate docs.
Fix it by replace the ini code block  with console.
Closes-bug:
@@ -169,7 +169,7 @@ Sample configuration
Create GPFS share type and set extra spec
-----------------------------------------
-.. code-block:: ini
+.. code-block:: console
$ manila type-create --snapshot_support True \
--create_share_from_snapshot_support True gpfs False
