Update capitalization.md

Adding text after H1, so big empty space is not appearing between the H1 and H2 like this: 

![image](https://user-images.githubusercontent.com/43381063/96309978-606a6180-0fd4-11eb-9a1f-ec79e01fe0d9.png)

Author: jenniferlee-dsva

src/_content-style-guide/capitalization.md

@@ -5,9 +5,11 @@ title: Capitalization
 
 # Capitalization
 
+As part of our plain language style, we use sentence capitalization as the standard on VA.gov, with a few exceptions.
+
 ## Use sentence case capitalization
 
-We use sentence case capitalization for most content, including page titles, headings, subheadings, buttons, and text links, unless a word is a proper noun. Don't capitalize common words for emphasis or importance.
+Use sentence case capitalization for most content, including page titles, headings, subheadings, buttons, and text links, unless a word is a proper noun. Don't capitalize common words for emphasis or importance.
 
 ### Exceptions where we use title capitalization