Update getting-started.adoc

docs: add Maven mirror config note for Spring AI snapshots

Add documentation about Maven mirror configuration when using Spring AI
snapshots, including examples of correct mirrorOf settings to allow
access to Spring repositories.

Signed-off-by: shishuiwuhen2009 <[email protected]>

Author: shishuiwuhen2009

spring-ai-docs/src/main/antora/modules/ROOT/pages/getting-started.adoc

@@ -70,6 +70,29 @@ repositories {
   }  
 }
 ----
+
+**NOTE:** When using Maven with Spring AI snapshots, pay attention to your Maven mirror configuration. If you have configured a mirror in your `settings.xml` like this:
+
+```xml
+<mirror>
+    <id>my-mirror</id>
+    <mirrorOf>*</mirrorOf>
+    <url>https://my-company-repository.com/maven</url>
+</mirror>
+```
+
+The wildcard `*` will redirect all repository requests to your mirror, preventing access to Spring snapshot repositories. To fix this, modify the `mirrorOf` configuration to exclude Spring repositories:
+
+```xml
+<mirror>
+    <id>my-mirror</id>
+    <mirrorOf>*,!spring-snapshots,!central-portal-snapshots</mirrorOf>
+    <url>https://my-company-repository.com/maven</url>
+</mirror>
+```
+
+This configuration allows Maven to access Spring snapshot repositories directly while still using your mirror for other dependencies.
+
 ======
 
 [[dependency-management]]