Incorrect exception handling in utils/spm_docs.py ?

[kchawla-pi]

In nipype/utils/spm_docs.py, the function _strip_header() has the code:

    try:
        index = doc.index(hdr)
        ...
    except KeyError as e:
        raise_from(IOError('This docstring was not generated by Nipype!\n'), e)

However, doc doesn't seem to be a dict type so KeyError wouldn't apply here.
If hdr is not found in doc, that would raise a ValueError, which is not caught by the code here.

This was the error I got

    index = doc.index(hdr)
ValueError: substring not found

Ubuntu 18

[djarecka]

@kchawla-pi - yes, doc doesn't seem to be a dict, rather string. Thank you for reporting. Would you like to create a PR to fix it.

[kchawla-pi]

Yup, on it.

[effigies]

Fixed in #2691.