Fixed typo.

backend/app/forms.py

@@ -7,7 +7,7 @@ from app.models import User
 
 class LoginForm(FlaskForm):
     username = StringField('Username', validators=[DataRequired()])
-    password = PasswordField('Pasword', validators=[DataRequired()])
+    password = PasswordField('Password', validators=[DataRequired()])
     remember_me = BooleanField('Remember Me')
     submit = SubmitField('Sign In')