Please use the "Edit with form" button wherever it's available. It will prevent mistakes in the future, and in some cases, removes garbage from the wikicode and makes the article neater. Notice that there's "Remove" and "Add" buttons for function arguments, return values and examples. There is almost no reason to ever edit the wikicode directly.
I'm happy to see you're contributing to the wiki! --NeatNit 22:12, 17 May 2017 (UTC)