Add a description for the language server field in the bug report template

Author: brettcannon

.github/ISSUE_TEMPLATE/1_new_bug_report.yml

@@ -40,6 +40,7 @@ body:
   - type: dropdown
     attributes:
       label: Language server
+      description: "The value of the `python.languageServer` setting"
       options : ['Default', 'Pylance', 'Jedi', 'Disabled']
     validations:
       required: true