Update README.md

Author: thomaspoignant

README.md

@@ -112,7 +112,7 @@ client.getIntegerValue(key: "my-flag", defaultValue: 1)
 client.getDoubleValue(key: "my-flag", defaultValue: 1.1)
 
 // Object
-client.getObjectValue(key: "my-flag", defaultValue: Value.structure(["key":Value.integer("1234"))
+client.getObjectValue(key: "my-flag", defaultValue: Value.structure(["key":Value.integer("1234")])
 ```
 
 > [!NOTE]