website: Correction of typo in function call in gem5_101

Earlier version of the gem5-101 HW3 used m5_dumpreset_stats().
Rather, the function name should have been m5_dump_reset_stats().

Change-Id: I769d6228bd9e4aa423fc2e7a10fd87127ffc0726
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/62811
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>