[docs] minor error in "Download reports" section

[dnmr]

/doc/build/html/tuto_report.html

last example piece reads: with open('invoice.pdf', 'w') as report_file:

but should be: with open('invoice.pdf', 'wb') as report_file:

since the downloaded report is a byte stream

[sebalix]

Thank you, fixed in https://github.com/OCA/odoorpc/commit/a7a0360e222d05b9fd7bea5f27c7e9993b9883a8