Make saved JSON files look nice

src/extension.ts

@@ -362,7 +362,7 @@ function saveAsJSON(prov: AnalysisResultsProvider) {
 			: undefined;
 		vscode.window.showSaveDialog({ defaultUri: defaultUri }).then(f => {
 			if (f) {
-				fs.writeFileSync(f.fsPath, JSON.stringify(prov.getJsonObject()));
+				fs.writeFileSync(f.fsPath, JSON.stringify(prov.getJsonObject(), null, 4));
 			}
 		});
 	} else {