Final answer:
HTML documents commonly contain hyperlinks to related topics, with the ability to link to other web pages or resources. PDFs can also include hyperlinks, while plain text and image files do not inherently support this feature.
Step-by-step explanation:
The form of documentation that often contains hyperlinks to related topics is HTML (HyperText Markup Language). This is because HTML is the standard markup language used to create web pages, which inherently support linking to other web pages or resources via hyperlinks. For instance, images, graphics, tables, or maps in an HTML document can serve as links, where clicking on them would lead to a larger version or related content on the World Wide Web. PDFs can also contain hyperlinks, though they are typically used in more static documents. Plain text files do not support hyperlinks since they contain only unformatted text, and image files by themselves cannot contain hyperlinks unless they are part of an HTML page or other interactive documents.