Update env.md (#4485)

Change "a HTTP xxx" to "an HTTP xxx".
2017-09-02 03:59:44 +08:00 · 2017-09-02 03:59:44 +08:00 · 098da6fe21
parent da3055bcf8
commit 098da6fe21
1 changed files with 1 additions and 1 deletions
--- a/machine/reference/env.md
+++ b/machine/reference/env.md
@ -98,7 +98,7 @@ machine's IP address is added to the [`NO_PROXY`/`no_proxy` environment
 variable](https://wiki.archlinux.org/index.php/Proxy_settings).

 This is useful when using `docker-machine` with a local VM provider (e.g.
-`virtualbox` or `vmwarefusion`) in network environments where a HTTP proxy is
+`virtualbox` or `vmwarefusion`) in network environments where an HTTP proxy is
 required for internet access.

 ```none