Update README.md

README.md

@@ -29,7 +29,7 @@ There are some advantages to accessing Stan through ``cmdstanr`` rather than rst
 ```
 devtools::install_github("stan-dev/cmdstanr")
 ```
-If you haven't installed cmdstan previously, you will also need to do that with ``install_cmdstan()``. Then you need to add ``cmdstan=TRUE`` to any ``ulam`` code to use cmdstan instead of rstan. To use cmdstan as the default interface, do ``set_ulam_cmdstan(TRUE)``.
+If you haven't installed cmdstan previously, you will also need to do that with ``cmdstanr::install_cmdstan()``. Then you need to add ``cmdstan=TRUE`` to any ``ulam`` code to use cmdstan instead of rstan. To use cmdstan as the default interface, do ``set_ulam_cmdstan(TRUE)``.
 
 Once rstan and cmdstan are installed (almost there), then you can install ``rethinking`` from within R using:
 ```