[Doc] Add two links to disagg_prefill.md (vllm-project#17168)

Signed-off-by: windsonsea <haifeng.yao@daocloud.io>

Author: windsonsea

docs/source/features/disagg_prefill.md

@@ -21,11 +21,11 @@ Disaggregated prefill DOES NOT improve throughput.
 
 ## Usage example
 
-Please refer to `examples/online_serving/disaggregated_prefill.sh` for the example usage of disaggregated prefilling.
+Please refer to <gh-file:examples/online_serving/disaggregated_prefill.sh> for the example usage of disaggregated prefilling.
 
 ## Benchmarks
 
-Please refer to `benchmarks/disagg_benchmarks/` for disaggregated prefilling benchmarks.
+Please refer to <gh-file:benchmarks/disagg_benchmarks> for disaggregated prefilling benchmarks.
 
 ## Development