DOC: A small spelling mistake

[zhangbowen-coder]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/dev/development/contributing.html

Documentation problem

Maybe the word "though" should be "through"?An "r" is missing, maybe this is not a big issue, but I think it is better to fix it.

Suggested fix for documentation

Please replace the wrong word "though" with "through".