comark/table/no-rows · Give a table a header and a row of data

The first row of CSV and TSV is the header, so data with one row, or none, has nothing to put under it. A fence stays code and a ::table renders nothing. JSON with an empty array has no rows either.

Incorrect

```csv
pond,ducks
```

lint-comark example.mdexample.md:1:1 comark/table/no-rowsThe ```csv fence 1 has no rows.Give it a header row and at least one row of data.✖ 1 problem

Correct

```csv
pond,ducks
Mill pond,14
```

lint-comark example.md✔ No problems