Docs: adding information on adjusting short link expiration time in Grafana cloud (#106112)

* Docs: adding information on adjusting short link expiration time in Grafana cloud

* changing admonition and adding info on changing config for cloud

* adjusting wording

* fixing typo

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

Co-authored-by: Isabel Matwawana <76437239+imatwawana@users.noreply.github.com>

---------

Co-authored-by: Isabel Matwawana <76437239+imatwawana@users.noreply.github.com>

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

@@ -54,6 +54,10 @@ By default, the configuration file is located at `/opt/homebrew/etc/grafana/graf
 For a Grafana instance installed using Homebrew, edit the `grafana.ini` file directly.
 Otherwise, add a configuration file named `custom.ini` to the `conf` directory to override the settings defined in `conf/defaults.ini`.
 
+### Grafana Cloud
+
+There is no local configuration file for Grafana Cloud stacks, but many of these settings are still configurable. To edit configurable settings, open a support ticket.
+
 ## Remove comments in the .ini files
 
 Grafana uses semicolons (`;`) to comment out lines in the INI file.
@@ -2101,7 +2105,7 @@ Setting `0` means the short links are cleaned up approximately every 10 minutes.
 A negative value such as `-1` disables expiry.
 
 {{< admonition type="caution" >}}
-Short links without an expiration increase the size of the database and can't be deleted.
+Short links without an expiration increase the size of the database and can't be deleted. Grafana recommends setting a duration based on your specific use case
 {{< /admonition >}}
 
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