correct r, x values to model link as line

Signed-off-by: Santiago Figueroa Manrique <[email protected]>

Author: figueroa1395

tests/data/state_estimation/ill-conditioned-by-line-meshed/input.json

@@ -14,7 +14,7 @@
       {"id": 5, "from_node": 2, "to_node": 3, "from_status": 1, "to_status": 1, "r1": 0.02, "x1": 0.05, "c1": 1.8e-07, "tan1": 0},
       {"id": 6, "from_node": 2, "to_node": 4, "from_status": 1, "to_status": 1, "r1": 0.03, "x1": 0.06, "c1": 2.4e-07, "tan1": 0},
       {"id": 7, "from_node": 3, "to_node": 4, "from_status": 1, "to_status": 1, "r1": 0.04, "x1": 0.07, "c1": 3.0e-07, "tan1": 0},
-      {"id": 8, "from_node": 1, "to_node": 2, "from_status": 1, "to_status": 1, "r1": 5e5, "x1": 5e5, "c1": 0, "tan1": 0}
+      {"id": 8, "from_node": 1, "to_node": 2, "from_status": 1, "to_status": 1, "r1": 5e-7, "x1": 5e-7, "c1": 0, "tan1": 0}
     ],
     "sym_load": [
       {"id": 9, "node": 4, "status": 1, "type": 0, "p_specified": 0, "q_specified": 0}