DOC: Fix extending.rst code style #36777
ref #36777
I tried to format development/extending.rst, please review
cc @dsaxton 
<samp>
Commenter does not have sufficient privileges for PR 36825 in repo pandas-dev/pandas<br>

</samp> Thanks for the PR. Can you replace "closes 36777" to "ref 36777" in your description, this is part of the issue, it will not solve it and close it.   > Thanks for the PR. Can you replace "closes 36777" to "ref 36777" in your description, this is part of the issue, it will not solve it and close it.

I have adjusted description, take a look Thanks @BeanNan lgtm @BeanNan Can you merge master? Another PR was merged that also touched this file.