changing name from Bootstrap 4 CDN Snippet to Bootstrap CDN Snippet

[ghozziayoub]

[Eventyret]

Thank you for this PR @ghozziayoub I would love to accept this but am unable to change the vscode name. This is because the name is set and all downloads and stats. Meaning if I change it I would have to publish new extensions.

Will keep this open a bit as it might be that Microsoft changes their way down the line.

Again thank you.

[Eventyret]

https://github.com/Binaryify/OneDark-Pro/issues/54