Getting Started: mac -> Mac OS X

It's properly called "Mac OS X"

1 files changed, 1 insertions, 1 deletions

diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md
index 4d3d5125a7..e4e65d99d2 100644
--- a/guides/source/getting_started.md
+++ b/guides/source/getting_started.md
@@ -165,7 +165,7 @@ This will fire up WEBrick, a webserver built into Ruby by default. To see your a
 
 ![Welcome Aboard screenshot](images/rails_welcome.png)
 
-TIP: To stop the web server, hit Ctrl+C in the terminal window where it's running. To verify the server has stopped you should see your command prompt cursor again. For most unix like systems including mac this will be a dollar sign `$`. In development mode, Rails does not generally require you to restart the server; changes you make in files will be automatically picked up by the server.
+TIP: To stop the web server, hit Ctrl+C in the terminal window where it's running. To verify the server has stopped you should see your command prompt cursor again. For most UNIX-like systems including Mac OS X this will be a dollar sign `$`. In development mode, Rails does not generally require you to restart the server; changes you make in files will be automatically picked up by the server.
 
 The "Welcome Aboard" page is the _smoke test_ for a new Rails application: it makes sure that you have your software configured correctly enough to serve a page. You can also click on the _About your application’s environment_ link to see a summary of your application's environment.