fix string formatting bug causing mangled id's

processFiles.go

@@ -61,7 +61,7 @@ func hashFile(filename string) (string, error) {
 		return "", fmt.Errorf("failed to copy data from file to hash function: %v", err)
 	}
 
-	return string(h.Sum(nil)), nil
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
 }
 
 // false if a file is not a LineageOS ROM .zip file