Typo

docs/web_interface.rst

@@ -21,5 +21,5 @@ packaged versions, falling back on the fuss-manager static file
 directory when assets are not found there.
 
 The idea is to target Debian Bullseye and Debian Buster+backports for
-offical packaging, and make the package still installable, even if not
+official packaging, and make the package still installable, even if not
 fully policy compliant, for earlier versions of Debian.