Update request_fsub.py

[GH05TNET]

Fixed The /delchannel Issues

Summary by Sourcery

Bug Fixes:

• Escape angle brackets in the /delchnl usage message to display correctly

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR refines request_fsub.py by correcting the usage message HTML encoding for the /delchannel command and cleaning up an extraneous trailing comment to resolve display and formatting issues.

File-Level Changes

Change	Details	Files
Escape HTML-sensitive characters in the /delchannel usage message	Replaced literal angle brackets with < and > in the temp.edit call	plugins/request_fsub.py
Remove stray trailing comment at end of file	Deleted an extraneous ‘#’ line that had no newline at EOF	plugins/request_fsub.py

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[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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[TechyShreyansh]

Thanks for ur Work