[commands] Fix @everyone elevation in the default help command.
[commands] Fix @everyone elevation in the default help command.

Harmon758/discord.py,khazhyk/discord.py,mgardne8/discord.py,lgkern/PriestPy,Harmon758/discord.py,imayhaveborkedit/discord.py,Rapptz/discord.py,rapptz/discord.py,variablehair/Eggplantato