Merge pull request #8196 from priyawadhwa/brew

Improve documentation for minikube installation via brew

site/content/en/docs/start/_index.md

@@ -56,6 +56,13 @@ If the [Brew Package Manager](https://brew.sh/) installed:
 brew install minikube
 ```
 
+If `which minikube` fails after installation via brew, you may have to remove the minikube cask and link the binary:
+
+```
+brew cask remove minikube
+brew link minikube
+```
+
 Otherwise, download minikube directly:
 
 ```shell