Fixes the nthRoots latexFunctions template string.

[aitee]

The $ was misplaced from the brace it was intended to be associated with.

When this template was selected, and attempted to be rendered in KaTeX, the following error was occurring:
katex.mjs:147 Uncaught (in promise) ParseError: KaTeX parse error: Can't use function '$' in math mode<…>
 
For my own understanding, where do these template strings come from? Are they standard representations within the math community? Or are some of them more LaTeX centric? I'd be curious to know if there is a good resource for these conventions (like the y in nthRoots).

Thanks!

[josdejong]

Thanks for fixing this issue and adding a test for it!

I made one inline comment, can you have a look at that?

[josdejong]

Thanks for the updates!

[josdejong]

I see the linter complains:

/home/runner/work/mathjs/mathjs/test/unit-tests/expression/node/FunctionNode.test.js
Error:   523:1  error  Trailing spaces not allowed         no-trailing-spaces
Error:   523:1  error  More than 1 blank line not allowed  no-multiple-empty-lines

✖ 2 problems (2 errors, 0 warnings)
  2 errors and 0 warnings potentially fixable with the `--fix` option.```
Can you run `npm run format` please?

[aitee]

I think it is good to go?