WORKSPACE: fix repository path of gperf fork

Test Plan: CI

X-Origin-Diff: phab/D755
GitOrigin-RevId: 65d4541c8a60e57825548abc831d6593161780ce
diff --git a/WORKSPACE b/WORKSPACE
index dfdc18b..14b80e2 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -152,7 +152,7 @@
 git_repository(
     name = "gperf",
     commit = "de9373c2d48a3edf29862eb8be44764a7f7d24c6",
-    remote = "https://github.com/nexantic/gperf.git",
+    remote = "https://github.com/monogon-dev/gperf.git",
     shallow_since = "1615306886 +0100",
 )