fix: ignore trailing shlashes in the path

https://stackoverflow.com/questions/33241050/trailing-slash-triggers-404-in-flask-path-rule

app/__init__.py

@@ -9,6 +9,7 @@
 def create_app(config=config_dict["dev"]):
     app = Flask(__name__)
     app.config.from_object(config)
+    app.url_map.strict_slashes = False
 
     db.init_app(app)