Update title.html (#955)

docs/documentation/elements/title.html

@@ -9,17 +9,17 @@ variables:
 - name: $title-size
   value: $size-3
 - name: $title-weight
-  value: $weight-light
-- name: $title-weight-bold
   value: $weight-semibold
 - name: $subtitle-color
   value: $grey-dark
 - name: $subtitle-size
   value: $size-5
-- name: $subtitle-strong
-  value: $grey-darker
 - name: $subtitle-weight
-  value: $weight-light
+  value: $weight-normal
+- name: $subtitle-strong-color
+  value: $grey-darker
+- name: $subtitle-strong-weight
+  value: $weight-semibold
 ---
 
 {% capture default %}