It appears that the 188.8.131.52 string replaced the 5.0.0 string in the installation guide. There may be some confusion around the bundle patches and how they impact the docs.
You cannot upgrade from 4.5 to 184.108.40.206 since 220.127.116.11 is a bundle patch. Bundle patches impact the 4th digit in the version string and will only include sparse updates (it's not a full install). So, in this case, customer will still need to follow the upgrade steps from 4.5 to 5.0. Once they are on 5.0, they can apply the bundle patches.
Once the maintenance release 18.104.22.168 is available, which is a full version that is intended to replace 5.0, customers should be able to upgrade directly from 4.5 to 22.214.171.124. The maintenance version includes includes all prior bundle patches 5.0.0.x.
Perhaps we need a new section in the install guide on applying bundle patches. Once a maintenance release is available, we should be able to update all 5.0 strings with 5.0.x version string.