Use punctuation for list

Co-authored-by: Liza Mock <liza.mock@sentry.io>

docs/product/explore/discover-queries/query-builder.mdx

@@ -15,7 +15,7 @@ From the **Discover** page, you can build a query in three ways.
   2. Enter a new display name
   3. Click "Save"
 
-There are five main building blocks that impact the results of your saved query, a combination of which can be used to narrow down your search.
+There are five main building blocks that impact the results of your saved query, a combination of which can be used to narrow down your search:
 
 1. Dataset selection
 2. Project, environment, and date range filters