Update out-dir option for #5322.

diff --git a/src/doc/src/reference/unstable.md b/src/doc/src/reference/unstable.md
index c5989df51d5104d9be4cd622b1baf196faf7cd69..1a305ba1fd9807bb5d7b81c9c36c50e9d5f3b859 100644 (file)
--- a/src/doc/src/reference/unstable.md
+++ b/src/doc/src/reference/unstable.md
@@ -173,7 +173,7 @@ that the artifacts are copied, so the originals are still in the `target`
 directory.  Example:
 
 ```
-cargo +nightly build --out-dir=out -Z out-dir
+cargo +nightly build --out-dir=out -Z unstable-options
 ```