Multiline string settings are now supported in the settings editor

[rzhao271]

Ref microsoft/vscode#79571

Hi! Just a note that you can now add the "editPresentation": "multilineText" key-value pair to any string setting that can take multiple lines. In the settings editor, the setting will then display a textarea rather than a single-line inputbox. The feature is currently available in the Insiders edition of VS Code, and will be released to Stable in around two weeks.