Wiki says the only current pandemic is AIDS and the most recently ended pandemic was H1N1. Are they just slow to update?
The wiki also notes,
In February 2020, WHO spokesperson Tarik Jasarevic clarified that, "there is no official category (for a pandemic)... For the sake of clarification, WHO does not use the old system of 6 phases — that ranged from phase 1 (no reports of animal influenza causing human infections) to phase 6 (a pandemic) — that some people may be familiar with from H1N1 in 2009."
At this time at least, "pandemic" is a lay term and not an official term, and it simply means, more or less, "a world-wide epidemic."
COVID-19 is at 4 out of 4 on the WHO's current scale that doesn't use the word "pandemic", that has replaced the 6-step pandemic scale. As such, it doesn't seem unreasonable to call the current outbreak a pandemic, although reasonable people could disagree about whether we would be at stage 5 or stage 6 of the old scale.
Normal colds aren't considered "pandemic" simply because one is so similar to the next that they are considered "endemic", as your quote suggests. If you tracked each individual cold virus I'm sure many of them would be pandemics, but because they are grouped together as one disease, that's not how they are counted. HPV also is of course "endemic" and so disqualified from "pandemic".
I'm not sure HIV can be considered "pandemic" anymore but maybe there are still large parts of the world where it is still spreading. It seems to me it's closer to the definition of "endemic".
Are they just slow to update?
They had included COVID-19 as a pandemic, but it was reverted with this reason given, "The World Health Organization has yet to classify coronavirus as a pandemic. Until they do so, it remains a possible pandemic. "
en.wikipedia.org
Of course, as had already been stated and recorded in the wiki article, WHO doesn't use the term "pandemic" anymore, so this reasoning is dubious. At any rate, until all the editors understand that WHO will no longer be using the term pandemic and settle on a new criteria, there won't be any new pandemics listed.
Wikipedia is very fast to update uncontroversial statements, but anything controversial (like calling something a "pandemic" without a published reference or official statement) is going to get reverted. You cannot add to the list of pandemics based on the definition of pandemic either -- Wikipedia doesn't allow "original research", so you must find a source that has called it a pandemic and convince anyone who disagrees that your source is more authoritative than their source. With long-term disagreements with many sources on both sides, sometimes both views are presented, but it all becomes very political at that point. (Political in the sense of the type of human interaction, not in the sense of partisanship.)