Simplify ai:platform:invoke documentation

- Use subsection headers (^^^) instead of bold formatting
- Remove Google Gemini example
- Remove 'Available Platforms' section with tab completion

Author: OskarStark

src/ai-bundle/doc/index.rst

@@ -623,19 +623,22 @@ The AI Bundle provides several console commands for interacting with AI platform
 The ``ai:platform:invoke`` command allows you to directly invoke any configured AI platform with a message.
 This is useful for testing platform configurations and quick interactions with AI models.
 
-**Basic Usage**
+Basic Usage
+^^^^^^^^^^^
 
 .. code-block:: terminal
 
     $ php bin/console ai:platform:invoke <platform> <model> "<message>"
 
-**Parameters**
+Parameters
+^^^^^^^^^^
 
 * ``platform``: The name of the configured platform (e.g., ``openai``, ``anthropic``, ``gemini``)
 * ``model``: The model to use (e.g., ``gpt-4o-mini``, ``claude-3-5-sonnet-20241022``)
 * ``message``: The message to send to the AI platform (enclosed in quotes)
 
-**Examples**
+Examples
+^^^^^^^^
 
 .. code-block:: terminal
 
@@ -645,10 +648,8 @@ This is useful for testing platform configurations and quick interactions with A
     # Using Anthropic
     $ php bin/console ai:platform:invoke anthropic claude-3-5-sonnet-20241022 "Explain quantum physics"
 
-    # Using Google Gemini
-    $ php bin/console ai:platform:invoke gemini gemini-1.5-flash "Write a haiku about coding"
-
-**Output**
+Output
+^^^^^^
 
 The command displays the response from the AI platform directly in the console:
 
@@ -657,15 +658,6 @@ The command displays the response from the AI platform directly in the console:
     $ php bin/console ai:platform:invoke openai gpt-4o-mini "Hello!"
     Response: Hello! How can I assist you today?
 
-**Available Platforms**
-
-The available platforms depend on your configuration in ``config/packages/ai.yaml``.
-Use tab completion to see the list of configured platforms:
-
-.. code-block:: terminal
-
-    $ php bin/console ai:platform:invoke <TAB>
-
 Usage
 -----