Apply suggestions from code review

Co-authored-by: Janice <janiceilene@github.com>

contributing/content-style-guide.md

@@ -316,6 +316,7 @@ For further guidance, see “[Formatting titles](https://docs.microsoft.com/styl
 
 ## Short titles
 We use short titles to populate the sidebar navigation. They should give users contextual understanding of the article, but align to the following standards:
+We use short titles to populate the sidebar navigation. They should give users contextual understanding of the article, but align to the following standards:
 
 - Short titles are 2-3 words long, yet should still convey the full meaning of the title.
 - To help cut words, look at the title in context: