Fix typo :)

Author: malcolmbarrett

NEWS.md

@@ -5,7 +5,7 @@
 * Loading **bayesplot** no longer overrides the ggplot theme! There are new
 functions for controlling the ggplot theme for **bayesplot** that work like
 their **ggplot2** counterparts but only affect plots made using **bayesplot**.
-Thanks to Malcolm Barret. (#117, #149)
+Thanks to Malcolm Barrett. (#117, #149)
     - `bayesplot_theme_set()` 
     - `bayesplot_theme_get()` 
     - `bayesplot_theme_update()`