remove unnecessary space (#3237)

scripts/build.js

@@ -115,4 +115,4 @@ function bytesToSize(bytes) {
     const i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)), 10)
     if (i === 0) return `${bytes} ${sizes[i]}`
     return `${(bytes / (1024 ** i)).toFixed(1)} ${sizes[i]}`
-  }
+}