Copyedit replica-set-sync for readability

New stats:
   coleman-liau: 12.522114537444931
   flesch-ease: 43.28273984336761
   flesch-level: 10.35520558002937
   foggy:
      count: 50
      factor: 0.11013215859030837
      threshold: 3
   sentence-count: 36
   sentence-len-avg: 12
   smog-index: 9.861636050157227
   word-count: 454

Old stats:
   coleman-liau: 15.702144772117958
   flesch-ease: 12.785462609092491
   flesch-level: 19.362275397866636
   foggy:
      count: 209
      factor: 0.1400804289544236
      threshold: 3
   sentence-count: 47
   sentence-len-avg: 31
   smog-index: 15.175829255058439
   word-count: 1492