After (or instead of) related-link items, you can have DITA2Go append fixed links to generated lists; by default DITA2Go omits these links:
[RelatedLinks]
; Fixed links to include at the bottom after all related links items:
; AddContentsLink = No (default) or Yes
AddContentsLink = Yes
; AddLOFLink = No (default) or Yes
AddLOFLink = Yes
; AddLOTLink = No (default) or Yes
AddLOTLink = Yes
; AddGlossaryLink = No (default) or Yes
AddGlossaryLink = Yes
; AddIndexLink = No (default) or Yes
AddIndexLink = Yes
The content of each fixed link is the text setting for the heading in question, found in the language configuration file; see §8.9 Localizing output headings, labels, and names. For example, in d2g_lang_en.ini:
[ContentsText]
TOCTitle = Contents