Make distinct code and console admonitions so readers are less likely to miss them (#20585)

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

docs/features/quantization/auto_awq.md

@@ -15,7 +15,7 @@ pip install autoawq
 
 After installing AutoAWQ, you are ready to quantize a model. Please refer to the [AutoAWQ documentation](https://casper-hansen.github.io/AutoAWQ/examples/#basic-quantization) for further details. Here is an example of how to quantize `mistralai/Mistral-7B-Instruct-v0.2`:
 
-??? Code
+??? code
 
     ```python
     from awq import AutoAWQForCausalLM
@@ -51,7 +51,7 @@ python examples/offline_inference/llm_engine_example.py \
 
 AWQ models are also supported directly through the LLM entrypoint:
 
-??? Code
+??? code
 
     ```python
     from vllm import LLM, SamplingParams