Update installHomebrew.adoc
`brew cask install` is deprecated and doesn't even work in latest homebrew. A way to do this now is `brew install --cask`.
@@ -2,7 +2,7 @@ In order to install Micronaut, run following command:
[source,bash]
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-$ brew cask install micronaut-projects/tap/micronaut
+$ brew install --cask micronaut-projects/tap/micronaut
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You can find more information about Homebrew usage on their https://brew.sh/[homepage].
