Align coding style

Author: mathiasbynens

script/build.js

@@ -7,6 +7,6 @@ const output = input.replace('<% pattern %>', pattern) + '\n';
 fs.writeFileSync('./index.js', output);
 
 const inputModule = fs.readFileSync('./src/index.mjs', 'utf8').toString().trim();
-const outputModule = inputModule.replace("<% pattern %>", pattern) + "\n";
+const outputModule = inputModule.replace('<% pattern %>', pattern) + '\n';
 
 fs.writeFileSync('./index.mjs', outputModule);