auth: lmdbbackend: add schema version 4 in the backend documentation

diff --git a/docs/backends/lmdb.rst b/docs/backends/lmdb.rst
index 474cc3cdac82332624b514ad6b05d138f2836a17..c85817038dd9f4b5d697bb752535e6ea66e2329b 100644 (file)
--- a/docs/backends/lmdb.rst
+++ b/docs/backends/lmdb.rst
@@ -81,7 +81,8 @@ PowerDNS Version  LMDB Schema version
 ================  ===================
 4.2.x             1
 4.3.x             2
-4.4.x and up      3
+4.4.x to 4.6.x    3
+4.7.x and up      4
 ================  ===================
 
 .. _settings-lmdb-random-ids: