[waiting] Add syntax highlighting for NSIS (.nsi, .nsh)

[CarsonSlovoka]

I can't find the "highlight" about NSIS(Nullsoft Scriptable Install System) on supported-languages

It would be great if you could add ("nsi", "nsh") to the N class. Thanks!

Prefix	Language
N	NASM, Newspeak, Nginx configuration file, Nim, Nix, nsi, nsh

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👉link about Contains NSIS syntax files for different text editors, browsers, and websites.