On this page https://jenkins.io/doc/pipeline/steps/pipeline-build-step/ , the wait parameter doesn't have documentation of what it does.  From my understanding, it appears that the documentation should be generated from here https://github.com/jenkinsci/pipeline-build-step-plugin/blob/19f0118c04a0e68773e7dd6c89796605d5492bdc/src/main/resources/org/jenkinsci/plugins/workflow/support/steps/build/BuildTriggerStep/help-wait.groovy .  

I am not sure if there is a reason why this uses groovy to generate the HTML rather than HTML like the other documentation.  It appears to not be working in the way it is intended though.