Use :rfc: and :abbr: sphinx roles

Change-Id: I34e0ddbd644944d98a26f9c0c93ad787b4d93679
diff --git a/requirements.txt b/requirements.txt
index 8a90dbc..4bc87db 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-furo == 2022.3.4
-sphinx ~= 4.0
+furo == 2022.6.4.1
+sphinx ~= 5.0