Decrease ggplot2 base_size from 14 to 12

Change-Id: I94de6fd74922d131a92c51ff3bd02bea79a7ab56
diff --git a/man/theme_ids.Rd b/man/theme_ids.Rd
index 7f64164..8ce9941 100644
--- a/man/theme_ids.Rd
+++ b/man/theme_ids.Rd
@@ -5,7 +5,7 @@
 \title{IDS Theme for ggplot2}
 \usage{
 theme_ids(
-  base_size = 14,
+  base_size = 12,
   base_family = idsBaseFontFamily,
   style = c("default", "light", "dark"),
   bgcolor = NULL