docs: remove multiple code blocks from comma-separated docs (#9323)

docs/snippets/modules/model_io/output_parsers/comma_separated.mdx

@@ -5,34 +5,24 @@ from langchain.llms import OpenAI
 from langchain.chat_models import ChatOpenAI
 
 output_parser = CommaSeparatedListOutputParser()
-```
-
 
-```python
 format_instructions = output_parser.get_format_instructions()
 prompt = PromptTemplate(
     template="List five {subject}.\n{format_instructions}",
     input_variables=["subject"],
     partial_variables={"format_instructions": format_instructions}
 )
-```
 
-
-```python
 model = OpenAI(temperature=0)
-```
 
-
-```python
 _input = prompt.format(subject="ice cream flavors")
 output = model(_input)
-```
 
-
-```python
 output_parser.parse(output)
 ```
 
+The resulting output will be:
+
 <CodeOutputBlock lang="python">
 
 ```