generate_apidoc.py: Ignore migrations
generate_apidoc.py: Ignore migrations

We do not want to include migrations to our API docs.

hrayr-artunyan/shuup,suutari-ai/shoop,shawnadelic/shuup,akx/shoop,akx/shoop,suutari/shoop,suutari-ai/shoop,jorge-marques/shoop,hrayr-artunyan/shuup,taedori81/shoop,suutari-ai/shoop,taedori81/shoop,shawnadelic/shuup,jorge-marques/shoop,shoopio/shoop,akx/shoop,shawnadelic/shuup,shoopio/shoop,taedori81/shoop,hrayr-artunyan/shuup,shoopio/shoop,jorge-marques/shoop,suutari/shoop,suutari/shoop