Generalize S3 allow-all documentation

Quick-Start-with-weed-mini.md

@@ -81,7 +81,7 @@ The initial IAM config will be created automatically for the `mini` user with th
 
 ## Default S3 Access
 
-By default, `weed mini` starts in **"Allow All" mode** if no S3 credentials are configured. This is designed for maximum ease of use in development and testing environments.
+By default, the SeaweedFS S3 gateway starts in **"Allow All" mode** if no S3 credentials are configured. This is designed for maximum ease of use in development and testing environments, and it applies to all S3 instances, including `weed mini`.
 
 - **No credentials configured**: All S3 operations are allowed without authentication.
 - **Credentials added**: As soon as *any* credentials are configured (either initially via flags/env vars or dynamically via the Admin UI/Shell), **authentication is automatically enabled** and all requests will then require valid credentials.

S3-Credentials.md

@@ -323,11 +323,11 @@ Environment variables create global admin access and cannot be scoped to specifi
 
 By default, the SeaweedFS S3 gateway handles anonymous access differently depending on whether any credentials have been configured:
 
-### Allow-All Mode (Default for `weed mini`)
+### Allow-All Mode
 
 If no S3 credentials have been configured through any of the methods above (config files, filer, or environment variables), the S3 gateway defaults to **Allow-All Mode**. In this mode:
 - All S3 operations are permitted without authentication.
-- This is the default state when starting `weed mini` without any flags or environment variables.
+- This is the default state for `weed mini` (and `weed s3`) when starting without any flags or environment variables.
 
 ### Authentication Required Mode