Update doc/PRIVILEGES

Correction of wrong syntax in the examples (=> instead of =)
libathemecore: modernize hook system

Use mowgli-2 features, avoid creating dynamic objects, and fix a potential
memory leak as well.
libathemecore: add stop/continue functions
libathemecore: thinko fix
chanserv/sync: Return after kicking for RESTRICTED
Merge pull request #86 from Rixcho/patch-1

Update doc/PRIVILEGES
memoserv/delete: Only accept numeric indexes.