Merge branch 'brad-homebrew-line-115' into 'master'

Note that Homebrew must be installed on the Mac on line 115

See merge request gitlab-org/gitlab!70712

doc/integration/elasticsearch.md

@@ -93,7 +93,7 @@ the indexer itself.
 
 This project relies on [International Components for Unicode](https://icu.unicode.org/) (ICU) for text encoding,
 therefore we must ensure the development packages for your platform are
-installed before running `make`.
+installed before running `make`. 
 
 #### Debian / Ubuntu
 
@@ -113,6 +113,9 @@ sudo yum install libicu-devel
 
 #### macOS
 
+NOTE:
+You must first [install Homebrew](https://brew.sh/).
+
 To install on macOS, run:
 
 ```shell