typo: in order they want -> in the order they want

We need from django.utils.html import format_html in this too.

This defaults to the same thing as label, so it's silly to show both being defined the same. We should probably either drop it from here or make it different.

This is generic, so probably shouldn't be referring specifically to review requests. Maybe "The name of the attribute on the object being displayed in the row"?

Typo: extra ) at the end.

Need to add from django.utils.translation import gettext_lazy as _ to these.

This feels a little awkward. How about:
Always use :py:func:~django.utils.html.format_html to build HTML with user-provided values, or :py:func:~django.utils.html.escape to convert plain text to safe HTML. If the content already comes from a trusted source, you can wrap it with :py:func:~django.utils.safestring.mark_safe

Typo: teh -> the

escape should be imported from django.utils.html

Need to add from django.utils.translation import gettext_lazy as _ to these.

Seems like something got left off here. Could probably just do "To make the column's content a link:"

Typo: define -> Define

link_func is only used if self.link = True, so we need to add that attr to the class vars here.

typos:

ReviewRequestsDataGrid -> ReviewRequestDataGrid

GroupsDataGrid -> GroupDataGrid

ReviewRequestsDataGrid -> ReviewRequestDataGrid

Lets include the detailed_label here too, like we did in the other MilestoneColumn example.

This should end in a period, not a colon.

This should probably include the unused **kwargs argument for future expansion.

There's a missing ) in here.

We should either include render_data and augment_queryset_for_data implementations in here, or at least link back to that section. As-is this example will create an N+1 query situation.

One of these has a trailing period and one doesn't

staticmethod is a builtin class, not a function. Can you check that this links correctly? If not, I suspect :py:class would work.

This should be grouped with the other django imports.

Ship It!