There’s lots of reasons that that phrase could be in the document:

“Open up the world of Wifi by purchasing our optional Wifi Adapter (not found in base model)” “Open up the world of WiFi with our new wireless printers (coming soon)”

Op’s lazy approach of doing a search and not even bothering to read the documents that he found is the core of the approach. The “algorithm” didn’t let him down. It found the most relevant document for his search.