GIF available here
Wookieepedia states that
Luke Skywalker demonstrated [force choke]
and later, to back up that claim, goes on to say
Luke Skywalker entered Jabba's Palace, where he was met by two Gamorrean guards who blocked his way. Luke raised his hand and the two Gamorrean guards clutched their throats and fell back.
However the only citation Wookieepedia provides is "Star Wars: Episode VI Return of the Jedi" so essentially they're basing the claim entirely their own interpretation of simply watching the scene in Episode VI. Even by the page's own description, there's not enough evidence to support a claim that Luke used Force Choke on Jabba's guards.
Luke simply raised his hand toward each guard, suggesting some kind of Force technique.
The guards had their hands near their throats but I wouldn't say they "clutched their throats". They stumbled backward. This all could be because Luke used Force Choke on them OR it could be something else. Perhaps he used a sort of Force Push to move them away. Some say the guards make choking sounds but it also could just be their normal pig-like gurgling/slurping noises. It could be either way.
Is there any more concrete evidence stating what exactly Luke did to Jabba's guards? I would prefer sources that go beyond simply watching the scene and interpreting what is seen. For example sources from interviews, books, novelizations, or even games would be most helpful. Canon or Legends sources are acceptable.