Doc fixes (#3052)

* trivial doc fixes

* trivial doc fixes

Author: coolbutuseless

R/geom-rug.r

@@ -4,7 +4,7 @@
 #' with the two 1d marginal distributions. Rug plots display individual
 #' cases so are best used with smaller datasets.
 #'
-#' The rug lines are drawn with a fixed size (3% of the total plot size) so
+#' The rug lines are drawn with a fixed size (3\% of the total plot size) so
 #' are dependent on the overall scale expansion in order not to overplot
 #' existing data.
 #'

R/stat-ellipse.R

@@ -3,7 +3,7 @@
 #' The method for calculating the ellipses has been modified from
 #' `car::ellipse` (Fox and Weisberg, 2011)
 #'
-#' @references John Fox and Sanford Weisberg (2011). An {R} Companion to
+#' @references John Fox and Sanford Weisberg (2011). An \R Companion to
 #'   Applied Regression, Second Edition. Thousand Oaks CA: Sage. URL:
 #'   \url{http://socserv.socsci.mcmaster.ca/jfox/Books/Companion}
 #' @param level The confidence level at which to draw an ellipse (default is 0.95),