FIX: typo in get switch length

Author: pseudocubic

Diff for: src/data_model/transformations/dss2eng.jl

@@ -504,7 +504,7 @@ function _dss2eng_line!(data_eng::Dict{String,<:Any}, data_dss::OpenDssDataModel
             # ENGINEERING model switches are zero-length objects
             for k in ["b_fr", "b_to", "g_fr", "g_to", "rs", "xs"]
                 if haskey(eng_obj, k)
-                    eng_obj[k] .*= get(eng_obj, length, 1.0)
+                    eng_obj[k] .*= get(eng_obj, "length", 1.0)
                 end
             end
             delete!(eng_obj, "length")