Wrong syntax for XML comment

[ndtoan96]

Summary

Helix is currently using C style comment for XML. But that's wrong. XML comment should be like this: <!--Your comment-->

Reproduction Steps

1. open an XML document
2. press Ctrl+c to comment a line

Helix log

No response

Platform

Windows

Terminal Emulator

wezterm 20240203-110809-5046fc22

Installation Method

winget

Helix Version

helix 23.10 (f6021dd)

[kirawi]

Fixed on master #4718