resources: Update hyperlinks to benchmark status page of gem5-20

Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Change-Id: Id502f5a2f76fc36c95965522217980f02db7d1b3
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-resources/+/35715
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/src/gapbs/README.md b/src/gapbs/README.md
index 90b1c2e..6acfca5 100644
--- a/src/gapbs/README.md
+++ b/src/gapbs/README.md
@@ -50,3 +50,6 @@
 ```sh
 gem5/build/X86/gem5.opt configs/run_gapbs.py [path to the linux kernel] [path to the disk image] kvm 1 classic cc 1 20
 ```
+## Working Status
+
+Working status of these tests for gem5-20 can be found [here](https://www.gem5.org/documentation/benchmark_status/gem5-20#gapbs-tests).
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