edit+readability: rs-architectures

BEFORE
---
file: build/master/json/core/.json
source: source/core/replica-set-architectures.txt
stats:
   coleman-liau: 14.255014005602241
   flesch-ease: 29.54934629665823
   flesch-level: 13.262844765813306
   foggy:
      count: 81
      factor: 0.1134453781512605
      threshold: 3
   sentence-count: 43
   sentence-len-avg: 16
   smog-index: 10.969770756190233
   word-count: 714

AFTER
---
file: build/master/json/core/replica-set-architectures.json
source: source/core/replica-set-architectures.txt
stats:
   coleman-liau: 12.615140186915884
   flesch-ease: 40.02162305295951
   flesch-level: 11.221352024922119
   foggy:
      count: 52
      factor: 0.08099688473520249
      threshold: 3
   sentence-count: 45
   sentence-len-avg: 14
   smog-index: 9.27011772238663
   word-count: 642
minor: fixing yaml syntax
edits: rs-architectures

Oldest:
---
file: build/master/json/core/replica-set-architectures.json
source: source/core/replica-set-architectures.txt
stats:
   coleman-liau: 14.286033519553072
   flesch-ease: 29.241332337274287
   flesch-level: 13.317361309601143
   foggy:
      count: 81
      factor: 0.11312849162011174
      threshold: 3
   sentence-count: 43
   sentence-len-avg: 16
   smog-index: 10.969770756190233
   word-count: 716

Old:
---
file: build/master/json/core/replica-set-architectures.json
source: source/core/replica-set-architectures.txt
stats:
   coleman-liau: 12.548500772797528
   flesch-ease: 39.1457222565688
   flesch-level: 11.013941576506955
   foggy:
      count: 60
      factor: 0.09273570324574962
      threshold: 3
   sentence-count: 50
   sentence-len-avg: 12
   smog-index: 9.3871
   word-count: 647

Current:
---
file: build/master/json/core/replica-set-architectures.json
source: source/core/replica-set-architectures.txt
stats:
   coleman-liau: 12.745875370919883
   flesch-ease: 37.719640207715145
   flesch-level: 10.988201568461214
   foggy:
      count: 66
      factor: 0.09792284866468842
      threshold: 3
   sentence-count: 56
   sentence-len-avg: 12
   smog-index: 9.330973305703688
   word-count: 674