Update getting_started.md

It may be confusing to a Rails newbie why "Article" is suddenly being referred to with the "A" being capitalized. Thus far in the guide, the "a" has always been in lowercase. I think it is helpful to point out the reason for this change (especially since not using the capital "A" will result in an error). [ci skip]

1 files changed, 2 insertions, 0 deletions

diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md
index d9619bbc21..83032aca5e 100644
--- a/guides/source/getting_started.md
+++ b/guides/source/getting_started.md
@@ -739,6 +739,8 @@ database columns. In the first line we do just that (remember that
 `@article.save` is responsible for saving the model in the database. Finally,
 we redirect the user to the `show` action, which we'll define later.
 
+TIP: You might be wondering why the `A` in `Article.new` is capitalized above, whereas most other references to articles in this guide have used lowercase. In this context, we are referring to the class named `Article` that is defined in `\models\article.rb`. Class names in Ruby must begin with a capital letter.
+
 TIP: As we'll see later, `@article.save` returns a boolean indicating whether
 the article was saved or not.