message: Small changes to comment wording
diff: @@ -4511,7 +4511,7 @@ std::vector<int> Mesh::CreatePeriodicVertexMapping(
  // are no replicas.
  for (int v : bdr_v) { primary2replicas[v]; }
  - // Make `r` and all of `r`'s replicas replicas of `p`. Delete `r` from the
  + // Make `r` and all of `r`'s replicas be replicas of `p`. Delete `r` from the
  // list of primary vertices.
  auto make_replica = [&replica2primary, &primary2replicas](int r, int p)
  {
  @@ -4555,21 +4555,21 @@ std::vector<int> Mesh::CreatePeriodicVertexMapping(
  {
  // `vi` is primary and `vj` is a replica
  int owner_of_vj = replica2primary[vj];
  - // Make `vi` and its replicas replicas of `vj`'s owner
  + // Make `vi` and its replicas be replicas of `vj`'s owner
  make_replica(vi, owner_of_vj);
  }
  else if (!pi && pj)
  {
  // `vi` is currently a replica and `vj` is currently primary
  - // Make `vj` and its replicas replicas of `vi`'s owner
  + // Make `vj` and its replicas be replicas of `vi`'s owner
  int owner_of_vi = replica2primary[vi];
  make_replica(vj, owner_of_vi);
  }
  else
  {
  // Both vertices are currently replicas
  - // Make `vj`'s owner and all of its owner's replicas replicas of
  - // `vi`'s owner
  + // Make `vj`'s owner and all of its owner's replicas be replicas
  + // of `vi`'s owner
  int owner_of_vi = replica2primary[vi];
  int owner_of_vj = replica2primary[vj];
  make_replica(owner_of_vj, owner_of_vi);
  