minor #447 [Platform] Fix small typo in documentation (lochmueller)

This PR was merged into the main branch.

Discussion
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[Platform] Fix small typo in documentation

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        |
| License       | MIT

Just a small typo in the documentation. Change the variable name of the result according to the model that is called.

Commits
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9c8ba56 Fix
9e4be0a [Platform] Fix small typo in documentation

Author: OskarStark

src/platform/doc/index.rst

@@ -45,10 +45,10 @@ And with a ``Symfony\AI\Platform\PlatformInterface`` instance, and a ``Symfony\A
 use the platform to interact with the AI model::
 
     // Generate a vector embedding for a text, returns a Symfony\AI\Platform\Result\VectorResult
-    $result = $platform->invoke($embeddings, 'What is the capital of France?');
+    $vectorResult = $platform->invoke($embeddings, 'What is the capital of France?');
 
     // Generate a text completion with GPT, returns a Symfony\AI\Platform\Result\TextResult
-    $embeddingsResult = $platform->invoke($model, new MessageBag(Message::ofUser('What is the capital of France?')));
+    $result = $platform->invoke($model, new MessageBag(Message::ofUser('What is the capital of France?')));
 
 Depending on the model and its capabilities, different types of inputs and outputs are supported, which results in a
 very flexible and powerful interface for working with AI models.