Add hint to set the version of Yarn

Author: stevepiercy

docs/install/install-from-packages.md

@@ -179,6 +179,12 @@ Install the latest Yarn 3 version (not the Classic 1.x one) using `npm`.
     ```console
     3.2.3
     ```
+    
+    If you do not see a version of Yarn 3, then try the following to set the active version.
+    
+    ```shell
+    yarn set version 3.x
+    ```
 
 
 (install-prerequisites-make-label)=