fix ValueError: unsupported format character ',' (0x2c) at index 27

[christianmeyer]

In context of AWS Identity Center based profiles I observed an error out of a typo in the error handling, which this is the fix for.

Traceback (most recent call last):
  File "/Users/username/.local/pipx/venvs/awsume/lib/python3.12/site-packages/1password.py", line 110, in pre_get_credentials
    'No access key for profile %, skip plugin flow'
ValueError: unsupported format character ',' (0x2c) at index 27

[sogaoh]

I ran into the same problem.
I think it's a reasonable fix, please merge.