fix: clear password field in Python login page too

scripts/build_docs.py

@@ -155,7 +155,7 @@ button:hover { background: #0052a3; }
 <h1>Momentry Docs</h1>
 <form id="loginForm">
 <input type="text" id="username" placeholder="Username" value="demo" required>
-<input type="password" id="password" placeholder="Password" value="demo" required>
+<input type="password" id="password" placeholder="Password" value="" required>
 <div class="error" id="error">Invalid credentials</div>
 <button type="submit">Login</button>
 <button type="button" class="btn-logout" onclick="logout()">Logout (clear session)</button>