fix scope of } in where clause (#129)

[Jollywatt]

Fixes sublime-syntax so that this test passes:

# #129
foo(x::A{B}) where {B} = 1
#         ^ punctuation.section.parameter.end.julia
#                    ^ punctuation.section.parameter.end.julia

Before the fix:

error: scope does not match
723 | foo(x::A{B}) where {B} = 1
725 | #                    ^ punctuation.section.parameter.end.julia
    |                      ^ this location did not match
actual:
    |                      ^ source.julia meta.function.inline.julia meta.where-clause.julia meta.parametric-type.julia 

which resulted in the } in where clause being highlighted a different colour to the { (icky!).