fix: bg verses now show range of verses

app/lib/books/bg/chapters/13/verses/06.json

@@ -2,7 +2,7 @@
   "book_title": "Bhagavad-gītā As It Is",
   "chapter": 13,
   "verse": 6,
-  "reference": "Bg 13.6, Bg 13.7, Bg 13.6-7",
+  "reference": "Bg 13.6-7",
   "devanagari": "महाभूतान्य् अहंकारो बुद्धिर् अव्यक्तम् एव च\nइन्द्रियाणि दशैकं च पंच चेन्द्रियगोचराः\nइच्छा द्वेषः सुखं दुःखं संघातश्चेतना धृतिः\nएतत्क्षेत्रं समासेन सविकारम् उदाहृतम्",
   "transliteration": "mahā-bhūtāny ahaṅkāro\nbuddhir avyaktam eva ca\nindriyāṇi daśaikaṁ ca\npañca cendriya-gocarāḥ\nicchā dveṣaḥ sukhaṁ duḥkhaṁ\nsaṅghātaś cetanā dhṛtiḥ\netat kṣetraṁ samāsena\nsa-vikāram udāhṛtam",
   "synonyms": [
@@ -157,5 +157,6 @@
     "The five great elements are a gross representation of the subtle false ego. They are a representation in the material conception. Consciousness is represented by intelligence, of which the unmanifested stage is the three modes of material nature. The unmanifested three modes of material nature is called <i>pradhāna.</i>",
     "One who desires to know the twenty-four elements in detail along with their interactions should study the philosophy in more detail. In <i>Bhagavad-gītā, </i>a summary only is given.",
     "The body is the representation of all these factors, and there are changes of the body, which are six in number: the body is born, it grows, it stays, it produces by-products, then begins to decay, and at the last stage it vanishes. Therefore the field is a nonpermanent material thing. However, the <i>kṣetrajña, </i>the knower of the field, its proprietor, is different."
-  ]
+  ],
+  "verse_end": 7
 }