Fix a typo.
`=== Instalation with Homebrew` should be `=== Installation with Homebrew`.
@@ -149,7 +149,7 @@ And now we are ready to start our node and single cluster:
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[float]
-=== Instalation with Homebrew
+=== Installation with Homebrew
On macOS, Elasticsearch can also be installed via https://brew.sh[Homebrew]:
