Update clang-format to disallow single line for-loops

src/2022/Day13.cpp

@@ -77,7 +77,8 @@ namespace y$1::day13
         Node node;
         node.nodes = std::stoi(str.substr(index));
         nodes.emplace_back(node);
-        while (str[index] >= '0' && str[index] <= '9') index++;
+        while (str[index] >= '0' && str[index] <= '9')
+          index++;
       }
       else
       {