Fix minor spelling issue in build.md
@@ -65,7 +65,7 @@ Below are a few of the main switches to configure:
* `--enable-x11-common-plugin`: Enable the optional X Window `x11-common.so` plugin.
-* `--with-sulgin`: Enable bundled `sulogin` program. Default is to use the
+* `--with-sulogin`: Enable bundled `sulogin` program. Default is to use the
system `sulogin(8)`. The sulogin shipped with Finit *allows password-less*
login if the `root` user is disabled or has no password at all.
