complete function signature for varinfo

[udohjeremiah]

The varinfo function doc says:

  varinfo(m::Module=Main, pattern::Regex=r""; all::Bool = false, imported::Bool = false, sortby::Symbol = :name, minsize::Int = 0)

  Return a markdown table giving information about exported global variables
  in a module, optionally restricted to those matching pattern.

  The memory consumption estimate is an approximate lower bound on the size of
  the internal structure of the object.

    •  all : also list non-exported objects defined in the module,
       deprecated objects, and compiler-generated objects.

    •  imported : also list objects explicitly imported from other
       modules.

    •  recursive : recursively include objects in sub-modules, observing
       the same settings in each.

    •  sortby : the column to sort results by. Options are :name
       (default), :size, and :summary.

    •  minsize : only includes objects with size at least minsize bytes.
       Defaults to 0.

While the keyword recursive was added to the parameters explained, it was not added to the function docs. This PR corrects the mistake.

[LilithHafner]

Thanks!