[Docs] Switch to better markdown linting pre-commit hook (#21851)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

docs/features/multimodal_inputs.md

@@ -588,7 +588,9 @@ Full example: <gh-file:examples/online_serving/openai_chat_completion_client_for
 
 To input pre-computed embeddings belonging to a data type (i.e. image, video, or audio) directly to the language model,
 pass a tensor of shape to the corresponding field of the multi-modal dictionary.
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 #### Image Embedding Inputs
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 For image embeddings, you can pass the base64-encoded tensor to the `image_embeds` field.
 The following example demonstrates how to pass image embeddings to the OpenAI server: