doc: update su.md (#473)

jaywcjlove · Feb 26, 2023 · 102422c · 102422c
1 parent 2075046
commit 102422c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/command/su.md b/command/su.md
@@ -46,7 +46,7 @@ su root -f
 变更帐号为test并改变工作目录至test的家目录：
 
 ```shell
-su -test
+su - test
 ```