Update custom properties to state maximum name length (#55344)

Co-authored-by: Sophie <[email protected]>

Author: bss-mc

content/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization.md

@@ -36,7 +36,7 @@ You can add custom properties to your organization and set values for those prop
 {% data reusables.profile.org_settings %}
 {% data reusables.organizations.access-custom-properties %}
 1. To add a new custom property, click **New property** in the upper right corner.
-1. In the "Name" field, type the name you'd like to use for your custom property. The name can't contain spaces.
+1. In the "Name" field, type the name you'd like to use for your custom property. The name can't contain spaces, and cannot exceed 75 characters in length.
 1. Optionally, in the "Description" field, fill in a description of your custom property.
 1. Under "Type", select the type of property you'd like to add. This can either be a text string{% ifversion ghes < 3.15 %} or a single select field{% else %}, a single select field, a multi select field, or a true/false boolean{% endif %}.
 1. Optionally, you can select **Allow repository actors to set this property**. When enabled, repository users and apps with the repository-level "custom properties" fine-grained permission will be able to set and update the property value for their repository.