Update _index.md (#93572)

Updated `grafana.ini` file path for macOS apple sillicon

docs/sources/setup-grafana/configure-grafana/_index.md

@@ -39,7 +39,7 @@ On Windows, the `sample.ini` file is located in the same directory as `defaults.
 
 ### macOS
 
-By default, the configuration file is located at `/usr/local/etc/grafana/grafana.ini`. For a Grafana instance installed using Homebrew, edit the `grafana.ini` file directly. Otherwise, add a configuration file named `custom.ini` to the `conf` folder to override the settings defined in `conf/defaults.ini`.
+By default, the configuration file is located at `/opt/homebrew/etc/grafana/grafana.ini` or `/usr/local/etc/grafana/grafana.ini`. For a Grafana instance installed using Homebrew, edit the `grafana.ini` file directly. Otherwise, add a configuration file named `custom.ini` to the `conf` folder to override the settings defined in `conf/defaults.ini`.
 
 ## Remove comments in the .ini files