Mention Inherit Env setting (fixes microsoft/vscode-remote-release#3030)

extensions/configuration-editing/schemas/attachContainer.schema.json

@@ -31,7 +31,7 @@
 							"null"
 						]
 					},
-					"description": "Remote environment variables."
+					"description": "Remote environment variables. If these are used in the Integrated Terminal, make sure the 'Terminal > Integrated: Inherit Env' setting is enabled."
 				},
 				"remoteUser": {
 					"type": "string",

extensions/configuration-editing/schemas/devContainer.schema.json

@@ -42,7 +42,7 @@
 							"null"
 						]
 					},
-					"description": "Remote environment variables."
+					"description": "Remote environment variables. If these are used in the Integrated Terminal, make sure the 'Terminal > Integrated: Inherit Env' setting is enabled."
 				},
 				"remoteUser": {
 					"type": "string",