website: Fixed broken Dockerfile links

These links, in the Building documentation, all had a trailing '>'
included by accident. This has been fixed.

Change-Id: Ie40883992008b807c0c324b09d78e0a970679070
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/29994
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/_pages/documentation/general_docs/building/index.md b/_pages/documentation/general_docs/building/index.md
index 070e384..1549c27 100644
--- a/_pages/documentation/general_docs/building/index.md
+++ b/_pages/documentation/general_docs/building/index.md
@@ -92,18 +92,18 @@
 Ubuntu 18.04 with all optional dependencies (Python 2):
 [gcr.io/gem5-test/ubuntu-18.04_all-dependencies](
 https://gcr.io/gem5-test/ubuntu-18.04_all-dependencies) ([source Dockerfile](
-https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile>)).
+https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile)).
 
 Ubuntu 18.04 with the minimum set of dependencies (Python 2):
 [gcr.io/gem5-test/ubuntu-18.04_min-dependencies](
 https://gcr.io/gem5-test/ubuntu-18.04_min-dependencies) ([source Dockerfile](
-https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile>)).
+https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile)).
 
 
 Ubuntu 20.04 with all optional dependencies (Python 3):
 [gcr.io/gem5-test/ubuntu-20.04_all-dependencies](
 https://gcr.io/gem5-test/ubuntu-20.04_all-dependencies) ([source Dockerfile](
-https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-20.04_all-dependencies/Dockerfile>)).
+https://gem5.googlesource.com/public/gem5/+/refs/heads/master/util/dockerfiles/ubuntu-20.04_all-dependencies/Dockerfile)).
 
 To obtain a docker image: