Fix the path of the webhook URL

On deploy I encountered a problem: without the trailing slash
Nginx responses with 304 status code and doesn't proxy requests.

.gitignore

@@ -7,4 +7,5 @@ app/data/config.py
 app/data/currates_conf.py
 log.txt
 messages.db
+currates.db
 currates.db.*

app/bot.py

@@ -109,8 +109,8 @@ def chosen_inline_result_callback(chosen_result: ChosenInlineResult) -> None:
         loop.run_until_complete(bot.delete_webhook())
         bot.run(debug=True)
     else:
-        webhook_future = bot.set_webhook(f"https://{HOST}:{SERVER_PORT}/{NAME}")
+        webhook_future = bot.set_webhook(f"https://{HOST}:{SERVER_PORT}/{NAME}/")
         loop.run_until_complete(webhook_future)
-        app = bot.create_webhook_app(f"/{NAME}", loop)
+        app = bot.create_webhook_app(f"/{NAME}/", loop)
         os.umask(0o137)    # rw-r----- for the unix socket
         web.run_app(app, path=UNIX_SOCKET, loop=loop)