merge solve 6

[pep8speaks]

Hello @GinRyan! Thanks for opening this PR.

• In the file [Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py):

[Line 40:77](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L40): W291 trailing whitespace [Line 50:2](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L50): W291 trailing whitespace [Line 51:6](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L51): W291 trailing whitespace [Line 52:4](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L52): W291 trailing whitespace [Line 53:2](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L53): W291 trailing whitespace [Line 58:8](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L58): W291 trailing whitespace [Line 59:1](https://github.com/asdf2014/algorithm/blob/7e2734b9b74eefd317114ed3f423ed545ce6c628/Codes/GinRyan/LeetCode/Python 3 Solves/6_zigzag_conversion.py#L59): W293 blank line contains whitespace

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