fix error msg

Author: rok-cesnovar

tests/testthat/test-install.R

@@ -127,8 +127,8 @@ test_that("toolchain checks on Unix work", {
   path_backup <- Sys.getenv("PATH")
   Sys.setenv("PATH" = "")
   if (os_is_macos()) {
-    err_msg_cpp <- "A suitable C++ compiler was not found. Please install the command line tools for Mac with 'xcode-select --install' or install Xcode from the app store. Then restart R and run cmdstanr::check_cmdstan_toolchain().."
-    err_msg_make <- "The 'make' tool was not found. Please install the command line tools for Mac with 'xcode-select --install' or install Xcode from the app store. Then restart R and run cmdstanr::check_cmdstan_toolchain().."
+    err_msg_cpp <- "A suitable C++ compiler was not found. Please install the command line tools for Mac with 'xcode-select --install' or install Xcode from the app store. Then restart R and run cmdstanr::check_cmdstan_toolchain()."
+    err_msg_make <- "The 'make' tool was not found. Please install the command line tools for Mac with 'xcode-select --install' or install Xcode from the app store. Then restart R and run cmdstanr::check_cmdstan_toolchain()."
   } else {
     err_msg_cpp <- "A C++ compiler was not found. Please install the 'clang++' or 'g++' compiler, restart R, and run cmdstanr::check_cmdstan_toolchain()."
     err_msg_make <- "The 'make' tool was not found. Please install 'make', restart R, and then run cmdstanr::check_cmdstan_toolchain()."