Fixed small error of spanish pages using _disclaimer instead of _declaracion

public/gdb/es/cromosomas.md

@@ -3,7 +3,7 @@ date: "2020-01-26T20:41:55.827Z"
 title: "Disorders of Sex Development: Gender is not Chromosomal"
 linkTitle: "Chromosomes"
 description: "DNA is more what you'd call guidelines, than actual rules."
-preBody: '_disclaimer'
+preBody: '_declaracion'
 classes:
   - gdb
 siblings:

public/gdb/es/hormonas.md

@@ -3,7 +3,7 @@ date: "2020-01-26T20:41:55.827Z"
 title: "Hormones: How do they work"
 linkTitle: "How Hormones Work"
 description: "It's nothing like magnets."
-preBody: '_disclaimer'
+preBody: '_declaracion'
 siblings:
   prev: /gdb/es/chromosomas
   prevCaption: Chromosomes

public/gdb/es/segunda-pubertad-fem.md

@@ -2,7 +2,7 @@
 date: "2020-01-26T20:41:55.827Z"
 title: "Estrogenic Second Puberty 101"
 description: "What to expect from feminizing HRT"
-preBody: '_disclaimer'
+preBody: '_declaracion'
 siblings:
   prev: /gdb/es/segunda-pubertad-masc
   prevCaption: Androgenic Second Puberty

public/gdb/es/segunda-pubertad-masc.md

@@ -2,7 +2,7 @@
 date: "2020-01-26T20:41:55.827Z"
 title: "Androgenic Second Puberty 101"
 description: "What to expect from masculinizing HRT"
-preBody: '_disclaimer'
+preBody: '_declaracion'
 siblings:
   prev: /gdb/es/hormonas
   prevCaption: How Hormones Work