Fix typo

Author: Chongkai Zhu

README.md

@@ -2,7 +2,7 @@
 
 This is based on [venv-pack](https://github.com/jcrist/venv-pack) but with lots of improvements added by
 [mrmathematica](https://github.com/mrmathematica/). It has Windows support. Bin/Scripts generated by venv will
-work without out-of-box.
+work out-of-box.
 
 Venv-pack is a command-line tool for packaging virtual environments for distribution. This is useful for deploying code
 in a consistent environment.
@@ -66,4 +66,4 @@ md my_env
 python -m zipfile -e venv.zip my_env\ 
 ```
 
-All features of venv should keep working from my_env folder. 
+All features of venv should keep working from my_env folder.