Fix typo in src/diffusers/pipelines/cosmos/pipeline_cosmos2_5_predict.py (#12914)

Author: miguelmartin75

src/diffusers/pipelines/cosmos/pipeline_cosmos2_5_predict.py

@@ -76,7 +76,7 @@ def retrieve_latents(
 
         >>> model_id = "nvidia/Cosmos-Predict2.5-2B"
         >>> pipe = Cosmos2_5_PredictBasePipeline.from_pretrained(
-        ...     model_id, revision="diffusers/base/pre-trianed", torch_dtype=torch.bfloat16
+        ...     model_id, revision="diffusers/base/post-trained", torch_dtype=torch.bfloat16
         ... )
         >>> pipe = pipe.to("cuda")