Flask blueprints routes double dot issue

I'm building a pretty basic Python-Flask app. In order not get get my code too cluttered I wanted to divide the routes into separate files related to specific features (e.g. user management) using Blueprints. Following code works fine:

The app.py:

from user_routes import usr_routes
app = Flask(__name__)
app.register_blueprint(usr_routes, url_prefix="/")

The user_routes.py

from flask import Blueprint

usr_routes = Blueprint("", __name__)

@usr_routes.route("/users")
def users():
    return "Not implemented yet"

The menu.html:

<li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
              Users
            </a>
            <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
              <li><a class="dropdown-item" href="{{url_for('..users')}}">Users</a></li>
              <li><a class="dropdown-item" href="{{url_for('new_user')}}">New User</a></li>
              <li><hr class="dropdown-divider"></li>
            </ul>
          </li>

Folder structure:

Project
|--app.py
|--user_routes.py
|--templates
|  |-menu.html
|  |-base.html

Question: Why do I need to add two dots in the HTML file in front of users? If I don't I get following error: werkzeug.routing.BuildError: Could not build url for endpoint users. Did you mean .users?