Update Sideloading.md

[BobSquarePants]

• Read and followed the contribution guidelines

Simple added "comment" line.

[niedev]

Hi, thank you for your pull request! But the guide says to reset the app at the beginning, then to open it and not continue. Your problem was that you continued the wizard in the step 3, but if you then reset the app in the step 3, you need to repeat the entire tutorial. So the suggestion to reset the app in that step is not correct, if you think that the tutorial is not clear enough, you can insert your indication to clear the storage in the step 1, or do other modification.