NOTE - I've come to realize that the following examples of verbiage may not be the best for non-native English speakers. So below these examples I offer other examples that use more common words than "evangelism" and "billet reading".
This is from the Harry Houdini Wikipedia page...
" Soon he extended his repertoire to include chains, ropes slung from skyscrapers, [[straitjacket]]s under water, and having to escape from and [[apnea|hold his breath]] inside a sealed milk can."
Obviously if the sentence read... "and having to escape from and apnea inside a sealed milk can." it would make no sense. The phrase "hold his breath" is NOT a Wikipedia page. So we can't link to a Wikipedia page called "hold his breath" The editor wants to explain the phrase "hold his breath" for anyone who wants to know that it means "apnea".
From the Christopher Hitchens Wikipedia page...
"... describing himself as a socialist and a Marxist, Hitchens began his break from the established political left"
The word "socialist" should be defined with a hyperlink for anyone not familiar with the term.
The page you would use to get more information is called " Obviously the sentence "... describing himself as a Democratic socialism and a Marxist..."
So the edit when written correctly would look like this ...
" describing himself as a [[Democratic socialism|socialist]] and a Marxist, Hitchens began his break from the established political left..."
- Randi, James. "Teleportation Magic Established By
Science, At Last!”. Swift (Blog). JREF. Retrieved January 19,
You want to make the name James Randi hyperlink to his Wikipedia page.