Update issue template

.github/ISSUE_TEMPLATE.md

@@ -13,3 +13,4 @@
 ##### 其他
 
 
+[注:] 完成后请关闭 issue

apps/users/models/user.py

@@ -38,6 +38,7 @@ class User(AbstractUser):
     phone = models.CharField(max_length=20, blank=True, null=True, verbose_name=_('Phone'))
     enable_otp = models.BooleanField(default=False, verbose_name=_('Enable OTP'))
     secret_key_otp = models.CharField(max_length=16, blank=True)
+    # Todo: private_key may be not used
     _private_key = models.CharField(max_length=5000, blank=True, verbose_name=_('ssh private key'))
     _public_key = models.CharField(max_length=5000, blank=True, verbose_name=_('ssh public key'))
     comment = models.TextField(max_length=200, blank=True, verbose_name=_('Comment'))