DOC: typo: ACL subdir match
ACL subdir match is "-m dir"
backport: 1.5 and above
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 7caf5f5..d54459a 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -11418,7 +11418,7 @@
- suffix match (-m end) : the patterns are compared with the end of the
extracted string, and the ACL matches if any of them matches.
- - subdir match (-m sub) : the patterns are looked up inside the extracted
+ - subdir match (-m dir) : the patterns are looked up inside the extracted
string, delimited with slashes ("/"), and the ACL matches if any of them
matches.