TOTP: Clarified README and --help

README.md

@@ -98,7 +98,9 @@ options:
                         storing and retrieving account credentials
   --user USER           set your RWTH Single Sign-On username
   --password PASSWORD   set your RWTH Single Sign-On password
-  --totp TOTP           set your RWTH Single Sign-On TOTP provider
+  --totp TOTP           set your RWTH Single Sign-On TOTP provider's serial
+                        number (see
+                        https://idm.rwth-aachen.de/selfservice/MFATokenManager)
   --config CONFIG       set your configuration file
   --cookiefile COOKIEFILE
                         set the location of a cookie file
@@ -136,7 +138,7 @@ configuration does:
     "only_sync_semester": [], // Only the specified semesters (e.g. ["23ss", "22ws"]) will be synced. `selected_courses` overrides this option.
     "user": "", // RWTH SSO username
     "password": "", // RWTH SSO password
-    "totp": "", // RWTH SSO TOTP "Serial Number", format: TOTP0000000A
+    "totp": "", // RWTH SSO TOTP "Serial Number", format: TOTP0000000A, see https://idm.rwth-aachen.de/selfservice/MFATokenManager
     "basedir": "./", // The base directory where all your files will be synced to
     "cookie_file": "./session", // The location of the session/cookie file, which can be used instead of a password.
     "use_secret_service": false, // Use the Secret Service integration (see README), instead of a password or a cookie file.

syncmymoodle/__main__.py

@@ -1128,7 +1128,7 @@ def main():
         "--password", default=None, help="set your RWTH Single Sign-On password"
     )
     parser.add_argument(
-        "--totp", default=None, help="set your RWTH Single Sign-On TOTP provider"
+        "--totp", default=None, help="set your RWTH Single Sign-On TOTP provider's serial number (see https://idm.rwth-aachen.de/selfservice/MFATokenManager)"
     )
     parser.add_argument("--config", default=None, help="set your configuration file")
     parser.add_argument(