docs: update README.md

passsword -> password

README.md

@@ -145,7 +145,7 @@ docker run -it \
     sickcodes/docker-osx:auto
 
 # username is user
-# passsword is alpine
+# password is alpine
 ```
 
 ### Older Systems
@@ -1816,7 +1816,7 @@ docker run -it \
     sickcodes/docker-osx:auto
 
 # username is user
-# passsword is alpine
+# password is alpine
 # Wait 2-3 minutes until you drop into the shell.
 ```