Correct refs

Author: andrjohns

.github/workflows/test-rstan.yaml

@@ -83,5 +83,6 @@ jobs:
 
       - name: Check rstan stanc works with complex packages
         run: |
-          pak::pak(c("ctsem", "rstanarm"), type = "source")
+          pak::pak(c("cran::ctsem", "cran::rstanarm"))
+          pak::pak(c("cran::ctsem?source", "cran::rstanarm?source"))
         shell: Rscript {0}