Update the instructions for creating the AliEn token.

The `alien-token-init` command is relevant only for experts.
For normal usage, `alien.py` is recommended.

Author: vkucera

docs/troubleshooting/README.md

@@ -159,13 +159,14 @@ Verify whether:
 How to check the timestamp?
 ```
 
-### Alien connection failed
+### AliEn connection failed
 
 Error message:
 
 ```text
 Alien Token Check failed - Please get an alien token before running with https CCDB endpoint, or alice-ccdb.cern.ch!
 ```
 
-- Create an Alien token by executing the `alien-token-init` command inside the O2Physics environment.
-- Verify that the connection can be established by executing `alien.py`. You should be greeted with `Welcome to the ALICE GRID`. Exit with `exit`.
+- Create the AliEn token by executing the `alien.py` command inside the O2Physics environment.
+- You should be greeted with `Welcome to the ALICE GRID`.
+- Exit with `exit`.