Update bug_report.md

.github/ISSUE_TEMPLATE/bug_report.md

@@ -15,7 +15,7 @@ A clear and concise description of what the bug is.
 - Julia version [Run `julia --version` in the terminal]
 - Python version [Run `python --version` in the terminal]
 - Did you install with `pip` or `conda`?
-- PySR version [Run `python -c 'import pysr; print(pysr.__version__)']
+- PySR version [Run `python -c 'import pysr; print(pysr.__version__)'`]
 - Does the bug still appear with the latest version of PySR?
 
 **Configuration**