fix broken urls

Author: teunbrand

R/stat-ellipse.R

@@ -5,7 +5,7 @@
 #'
 #' @references John Fox and Sanford Weisberg (2011). An \R Companion to
 #'   Applied Regression, Second Edition. Thousand Oaks CA: Sage. URL:
-#'   \url{https://socialsciences.mcmaster.ca/jfox/Books/Companion/}
+#'   \url{https://www.john-fox.ca/Companion/}
 #' @references Michael Friendly. Georges Monette. John Fox. "Elliptical Insights: Understanding Statistical Methods through Elliptical Geometry."
 #' Statist. Sci. 28 (1) 1 - 39, February 2013. URL: \url{https://projecteuclid.org/journals/statistical-science/volume-28/issue-1/Elliptical-Insights-Understanding-Statistical-Methods-through-Elliptical-Geometry/10.1214/12-STS402.full}
 #'