Incorrect diff shown (quoted characters) in edit review

[supermathie (Michael Brown)]

This diff shows up incorrectly in the edit review modal:

actual old is:

      EB [label="Elasticsearch\nLoad Balancer"]
      {L1 L2 L3} -> EB

actual new is:

      {L1 L2 L3} -> {E1 E2 E3}
      {G1 G2 G3} -> {E1 E2 E3}