Fix picking IDS departments palette for ggplot2

Change-Id: I0aecc7dc0e9d6f20287f906a74b7140b9a9a7a46
diff --git a/R/idsThemeR.R b/R/idsThemeR.R
index 0465942..bbe510b 100644
--- a/R/idsThemeR.R
+++ b/R/idsThemeR.R
@@ -127,7 +127,7 @@
 #'
 ids_pal <- function(palette="default") {
   values <- switch(tolower(palette),
-                   ids = idsPalette(),
+                   ids = idsPaletteIDS(),
                    gray = idsPaletteGreyscale(),
                    grey = idsPaletteGreyscale(),
                    poly20 = idsPalettePoly20(),