PR: Change entry name for file completions to 'file' (Editor)

[ccordoba12]

Description of Changes

This also scales the icon a bit to better match the size of the others.

Before

After

Affirmation

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[pep8speaks]

Hello @ccordoba12! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file spyder/utils/icon_manager.py:

Line 277:80: E501 line too long (126 > 79 characters)

[isabela-pf]

Looks good to me! I really appreciate the change in description to be just file since they aren't actually new files (even though I know it was probably getting it from the icon's name). Thanks @ccordoba12!