Update capital-letter caveat

content/docs/components-and-props.md

@@ -87,9 +87,9 @@ Let's recap what happens in this example:
 
 >**Caveat:**
 >
->Always start component names with a capital letter.
+> Always start component names with a capital letter.
 >
->For example, `<div />` represents a DOM tag, but `<Welcome />` represents a component and requires the capital 'W' in `Welcome` to be in scope.
+> React treats components starting with lowercase letters as DOM tags. For example, `<div />` represents an HTML div tag, but `<Welcome />` represents a component and requires `Welcome` to be in scope.
 
 ## Composing Components