Update config.jl

Author: ChrisRackauckas

src/config.jl

@@ -30,9 +30,10 @@ end
 SmallTag is similar to a Tag, but carries just a small UInt64 hash, 
 instead of the full type, which makes stacktraces / types easier to 
 read while still providing good resilience to perturbation confusion.
+"""
 struct SmallTag{H}
 end
-"""
+
 @generated function tagcount(::Type{SmallTag{H}}) where {H}
     :($(Threads.atomic_add!(TAGCOUNT, UInt(1))))
 end