Update brew instructions

`brew cask install` -> `brew install --cask`
rstats-wtf · Mar 23, 2021 · 9b3d43c · 9b3d43c
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commit 9b3d43c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/14_system-prep-for-build.Rmd b/14_system-prep-for-build.Rmd
@@ -84,7 +84,7 @@ Instead, if you prefer the convenience of homebrew, we recommend installing the
 dropped due to [a homebrew policy change around 2019-03-11](https://github.com/Homebrew/homebrew-cask/pull/59689)*. 
 
 ```r
-brew cask install r
+brew install --cask r
 ```
 
 This will install the CRAN R distribution, so all package binaries will be