wiki: fix typo in AI about Ollama port

"post" should be "port"

Change-Id: I06dba517653b6165b718d93e34ec2a435456c38f
GitHub-Last-Rev: a5845378f286949bbd4655912289dae7f46a49cd
GitHub-Pull-Request: golang/wiki#30
Reviewed-on: https://go-review.googlesource.com/c/wiki/+/622215
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>