Fix tilde character interpreted as null in syntax

[Dracyr]

Sublime (Linux, build 4090) threw an error for me when loading .res files

error parsing lexer: Packages/User/rescript-sublime/ReScript.sublime-syntax: invalid type for match at line 39 column 14
generating syntax summary
error: Error loading syntax file "Packages/User/rescript-sublime/ReScript.sublime-syntax": invalid type for match at line 39 column 14

AFAIK, tilde characters in yaml mean null [1], so they either need to be wrapped in quotes or escaped. Don't know if the yaml parser in Sublime Text 4 has been updated so that this now becomes an issue.

[1] https://yaml.org/spec/1.2/spec.html#id2805071

[IwanKaramazow]

@Dracyr thanks!

[chenglou]

Aaaah a fellow ST4 user =)
Yeah this is a new issue. Worked fine under ST3. Thanks for the fix