spring-tools/vscode-extensions/vscode-boot-properties/properties-support/language-configuration.json

{
	"comments": {
		"lineComment": "#"
	},
	"brackets": [
	],
	"autoClosingPairs": [
		["{", "}"],
		["[", "]"],
		["(", ")"],
		["\"", "\""],
		["'", "'"]
	],
	"surroundingPairs": [
		["{", "}"],
		["[", "]"],
		["(", ")"],
		["\"", "\""],
		["'", "'"]
	]
}