Fixed README

Author: zauguin

README.md

@@ -355,7 +355,7 @@ db << "select data from tbl where id = 1"
 			for(auto i : get<vector<int>>(data)) cout << i << ","; cout << endl;
 		};
 
-db << "select age,name,img from tbl where id = 2"
+db << "select data from tbl where id = 2"
 		>> [](std::variant<vector<int>, double> data) {
 			if(data.index() != 2) {
 				cerr << "ERROR: we expected a real number" << std::endl;