The "here" hyperlink in
— There is a free 30-day trial available for Minecraft if you choose to sign up for a 10 user subscription. For more information about Realms you can check them out here.
leads to https://www.minecraft.net/en-us/realms-plus, which is a 404. It should lead to https://www.minecraft.net/en-us/realms/bedrock instead.
We have done some updates on our help articles. In the section Are there trials available for Minecraft Realms Plus? it seems the link now correctly links to the valid page. Closing this report as fixed, thanks for finding it!