fix incorrect syntax in docs (bug 5310)

diff --git a/docs/source/siteadmin/deploying.rst b/docs/source/siteadmin/deploying.rst
index 00e98a6611a074ea6c2c2696c6973633ab974568..2aadd045888efddf9acabc70a7897e6d5a431bba 100644 (file)
--- a/docs/source/siteadmin/deploying.rst
+++ b/docs/source/siteadmin/deploying.rst
@@ -102,7 +102,7 @@ name will be ``mediagoblin`` too.
 
 We'll add these entities by first switching to the *postgres* account::
 
-    # su -u postgres
+    # su - postgres
 
 This will change your prompt to a shell prompt, such as *-bash-4.2$*. Enter
 the following *createuser* and *createdb* commands at that prompt. We'll