Steps to reproduce
There is a small typo on https://help.obsidian.md/How+to/Format+your+notes#Tables which I became aware of after a newbie asked for it on Discord.
The first table introduced on that page has a typo. If you copy it, you will see that the header line in the second column contains an en-dash (or similar, my typography knowledge is lacking) in a row of hyphens.
The corrected table should be
|First Header | Second Header| |------------ | ------------| |Content from cell 1 | Content from cell 2| |Content in the first column | Content in the second column|
Table won’t render because of improper syntax, which confused someone a lot.