Indentation

README.md

@@ -150,5 +150,11 @@ db.orders.aggregate([
 ### requête 7
 
 ```js
-db.orders.aggregate([{$unwind:"$items" }, {$group:{_id:"$items.vendor", "total":{$sum: {$multiply: ["$items.finalprice", "$items.qty"]}}}}])
+db.orders.aggregate([
+    {$unwind:"$items" },
+    {$group:{
+        _id:"$items.vendor",
+        "total":{$sum: {$multiply: ["$items.finalprice", "$items.qty"]}}
+    }}
+])
 ```