remove excess roxygen comment

Author: hturner

.gitignore

@@ -1,4 +1,5 @@
 /.quarto/
 _site
 site_libs
-*_files
+*_files
+.Rproj.user

_freeze/slides/02-package-foundations/index/execute-results/html.json

@@ -108,7 +108,7 @@ This should either be a url, e.g.
 
 ```{r, eval = FALSE}
 #' @source Henderson and Velleman (1981), Building multiple  
-#' #' regression models interactively. *Biometrics*, **37**, 391–411.
+#'  regression models interactively. *Biometrics*, **37**, 391–411.
 ```
 
 ## Internal data