docs: models-and-compose: move deprecated provider service type section to end of page (#23537)

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## Description

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Move deprecated `provider` service type section to end of page to not
interrupt the reading flow of the preferred definition.

## Related issues or tickets

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- [ ] Technical review
- [ ] Editorial review
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Signed-off-by: Dorin Geman <[email protected]>

Author: doringeman

content/manuals/ai/compose/models-and-compose.md

@@ -83,33 +83,6 @@ Common configuration options include:
 > [!TIP]
 > See more example in the [Common runtime configurations](#common-runtime-configurations) section.
 
-### Alternative configuration with provider services
-
-> [!IMPORTANT]
->
-> This approach is deprecated. Use the [`models` top-level element](#basic-model-definition) instead.
-
-You can also use the `provider` service type, which allows you to declare platform capabilities required by your application.
-For AI models, you can use the `model` type to declare model dependencies.
-
-To define a model provider:
-
-```yaml
-services:
-  chat:
-    image: my-chat-app
-    depends_on:
-      - ai_runner
-
-  ai_runner:
-    provider:
-      type: model
-      options:
-        model: ai/smollm2
-        context-size: 1024
-        runtime-flags: "--no-prefill-assistant"
-```
-
 ## Service model binding
 
 Services can reference models in two ways: short syntax and long syntax.
@@ -360,6 +333,33 @@ models:
       - "0.9"
 ```
 
+## Alternative configuration with provider services
+
+> [!IMPORTANT]
+>
+> This approach is deprecated. Use the [`models` top-level element](#basic-model-definition) instead.
+
+You can also use the `provider` service type, which allows you to declare platform capabilities required by your application.
+For AI models, you can use the `model` type to declare model dependencies.
+
+To define a model provider:
+
+```yaml
+services:
+  chat:
+    image: my-chat-app
+    depends_on:
+      - ai_runner
+
+  ai_runner:
+    provider:
+      type: model
+      options:
+        model: ai/smollm2
+        context-size: 1024
+        runtime-flags: "--no-prefill-assistant"
+```
+
 ## Reference
 
 - [`models` top-level element](/reference/compose-file/models.md)