Update dataset import to use json_dataset (#207)

Replaces usage of `jsonl_dataset` with `json_dataset` in code examples.

Author: karangattu

docs/misc/evals.qmd

@@ -158,7 +158,7 @@ chat.export_eval(
 Since our data is now is in JSONL format, before running the eval, we'll want to tweak our `Task` definition to load the JSONL dataset:
 
 ```python
-from inspect_ai.dataset import jsonl_dataset
+from inspect_ai.dataset import json_dataset
 
 Task(dataset=jsonl_dataset("my_eval_dataset.jsonl"), ...)
 ```
@@ -177,7 +177,7 @@ Having the system prompt and conversation history included in your `dataset` is
 ```{.python filename="my_eval.py"}
 from chatlas import ChatOpenAI
 from inspect_ai import Task, task
-from inspect_ai.dataset import jsonl_dataset
+from inspect_ai.dataset import json_dataset
 from inspect_ai.scorer import model_graded_qa
 
 # No system prompt needed since dataset already includes it
@@ -294,4 +294,4 @@ If there is no existing resource of input prompts to pull from, still try to avo
 >
 > Scenarios: Situations or problems the AI may encounter and needs to handle.
 >
-> Personas: Representative user profiles with distinct characteristics and needs.
+> Personas: Representative user profiles with distinct characteristics and needs.