calculated text checksum is different from the header one

[ktKongTong]

thank you for your great work. I am working on building another AppInfo.vdf editor(web verision). The documentation has helped me a lot.

I parse an AppInfo object into a custom object.
when I serialize it into binary format, the calculated hash matches the binary checksum in header perfectly.

but when I serialize it into text format and hash it, most of the results are different from the hash field in the binary header.

To investigate, I debugged appinfo.py and found that it also has the same issue.

it's seem that replace \\ to \\\\ didn't solve all problems.

if __name__ == "__main__":
    appinfo = Appinfo('./appinfo.vdf')
    checksum = appinfo.update_app(10)