Update Nginx definition

Update Nginx definition cc @ChadMalchow

LGTM

Status changed to merged

mentioned in commit 5672c206

Thanks Chris! Have a good weekend.

LGTM too @julie_manalo thanks for providing it. @MrChrisW, in other similar MR's submitted by @dan.gitlab , I've held off on merging because I felt it would be appropriate to link to external resources / source docs for the definitions. E.g. see https://gitlab.com/gitlab-org/University/merge_requests/33#note_13258290 . Your thoughts?

@ernstvn Completely agree Maybe there could be a new meta issue for adding links to definitions.