Update environment-vars.qmd for QUARTO_JULIA

docs/advanced/environment-vars.qmd

@@ -22,6 +22,8 @@ You can read about other ways to set environment variables in Quarto Projects in
 +------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | `QUARTO_PYTHON`              | Explicit path to the version of `python` to be used by the `jupyter` engine and `quarto run *.py` command.                                                                                       |
 +------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| `QUARTO_JULIA`               | Explicit path to the version of `julia` to be used by the `julia` engine.                                                                                                                        |
++------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | `QUARTO_VERSION_REQUIREMENT` | A [`semver`](https://semver.org/) string describing the Quarto version requested by the environment. If this check fails, Quarto will not run.                                                   |
 +------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | `QUARTO_KNITR_RSCRIPT_ARGS`  | Comma separated list of command line argument to pass to `Rscript` started by Quarto when rendering with `knitr` engine, e.g.                                                                    |