Your coins weren't moved to your own wallet.
Having a single output with round amount doesn't always mean that it didn't changed hands (the keyword in the WiKi is "likely").
The message that you see in that specific blockexplorer is just a generic tag to such transactions, but it doesn't mean that it's always the case.

It's pretty obvious that if all of your funds are sent to a single output, then there wont be any change left to send to a "change address".
For the exact (round) amount, it's common in tools that automatically deduct the fee from the input(s) and the output's amounts;
or even Electrum's "output value rounding" can produce such output.