Update the help (for real this time)

[pllim]

This is an automated issue from STScI. The email help[at]stsci.edu should no longer be used but it is found in the following file(s):

• pyproject.toml If it is used as:

• author email in packaging metadata -- remove the field completely.

• author email in documentation -- remove from text completely.

• help desk contact point -- replace with appropriate link to relevant STScI help desk.

If this issue was opened in error, please close it without further action. You may also close the issue once the email has been removed or replaced in this repository.

We apologize for any inconvenience caused.

:cat: