update links to task_guide.md (#1348)

docs/new_task_guide.md

@@ -252,7 +252,7 @@ metric_list:
 ```
 `aggregation` and `higher_is_better` can optionally be left out to default to the manually-set defaults if using a natively supported metric, otherwise it must be defined explicitly (for example, when using a custom metric implemented as a function).
 
-For a full list of natively supported metrics and aggregation functions see `docs/advanced_task_guide.md`. All metrics supported in [HuggingFace Evaluate](https://github.com/huggingface/evaluate/tree/main/metrics) can also be used, and will be loaded if a given metric name is not one natively supported in `lm-eval` or `hf_evaluate` is set to `true`.
+For a full list of natively supported metrics and aggregation functions see [`docs/task_guide.md`](https://github.com/EleutherAI/lm-evaluation-harness/blob/main/docs/task_guide.md). All metrics supported in [HuggingFace Evaluate](https://github.com/huggingface/evaluate/tree/main/metrics) can also be used, and will be loaded if a given metric name is not one natively supported in `lm-eval` or `hf_evaluate` is set to `true`.
 
 ### Optional, More Advanced Setup
 
@@ -265,7 +265,7 @@ As a heuristic check:
 * Do you expect to compute metrics after applying multiple such processing steps on your model outputs?
 * Does your task rely on metrics that need a custom implementation?
 
-For more detail on the task system and advanced features, see `docs/advanced_task_guide.md` . If none of the above sound like they apply to your task, it's time to continue onto checking your task performance!
+For more detail on the task system and advanced features, see [`docs/task_guide.md`](https://github.com/EleutherAI/lm-evaluation-harness/blob/main/docs/task_guide.md) . If none of the above sound like they apply to your task, it's time to continue onto checking your task performance!
 
 ### Task name + groups (registering a task)