Relates to WEB-6951
Link to affected article: https://help.minecraft.net/hc/en-us/articles/15518267480461

The link for Minecraft: Java Edition where people can get to know how to backup is same as one for Minecraft: Bedrock Edition. (And that article they linked is about transferring worlds in Minecraft: Bedrock Edition ("How To Transfer Your World To Another Device In Minecraft: Bedrock Edition"))

The solution is create separate article or separate procedure in the same article, where players can get to know how to back-up their saves in Minecraft: Java Edition