Ran clang-format [skip ci]

Author: ankane

examples/disco/example.cpp

@@ -38,10 +38,7 @@ Dataset<int, std::string> load_movielens(const std::string& path) {
     while (std::getline(movies_file, line)) {
         std::string::size_type n = line.find('|');
         std::string::size_type n2 = line.find('|', n + 1);
-        movies.emplace(
-            line.substr(0, n),
-            convert_to_utf8(line.substr(n + 1, n2 - n - 1))
-        );
+        movies.emplace(line.substr(0, n), convert_to_utf8(line.substr(n + 1, n2 - n - 1)));
     }
 
     // read ratings and create dataset