add dependency for task `BuildModFiles`

.vscode/tasks.json

@@ -56,7 +56,10 @@
 			"group": {
 				"kind": "build"
 			},
-			"problemMatcher": []
+			"problemMatcher": [],
+			"dependsOn": [
+				"MakeHTML"
+			]
 		},
 		{
 			"type": "typescript",