...and another double crochet stitch in the same place, completing the v stitch.
When you get to the end of the row, you'll work a chain stitch, and then after that you'll work one double crochet stitch into each of the last two stitches.
This creates a nice neat edge that matches the edge you made at the beginning of the row.
Work 3 chain stitches to be used as a turning chain.
Turn the work over so you can work the second row by crocheting back across the first row.
Your turning chain will count as the first double crochet stitch in the row, so there is no need to work another stitch in the first stitch. You'll work a double crochet stitch into the next double crochet.