Fix off-by-one stanza break issues in NT hymns

- Colossians 1: [17,20] → [18,21] - properly groups creation (vv 15-17)
  and redemption (vv 18-20) themes in Christ hymn
- John 1: [5,9,14,18] → [6,9,14] - keeps light theme (vv 1-5) together,
  v6 starts John the Baptist section
- Revelation 5: [10,13,14] → [11,13] - new song (vv 9-10) stays together,
  angels join at v11

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

kjvstudy_org/data/poetry_formatting.json

@@ -2693,10 +2693,9 @@
       ],
       "stanza_breaks": {
         "1": [
-          5,
+          6,
           9,
-          14,
-          18
+          14
         ]
       }
     },
@@ -2719,8 +2718,8 @@
       ],
       "stanza_breaks": {
         "1": [
-          17,
-          20
+          18,
+          21
         ]
       }
     },
@@ -2751,9 +2750,8 @@
           11
         ],
         "5": [
-          10,
-          13,
-          14
+          11,
+          13
         ],
         "7": [
           12,