Update 1-intro.mdx

docs/6-facet/1-intro.mdx

@@ -1,6 +1,6 @@
-# 🦸 Intro to facets
+# 🦸 Intro to Facets
 
-A facet is a way to group documents together based on a common value.  For example, if you have a list of movies, you might want to group them by genre. You could then use the facet to filter the results to only show movies of a certain genre.
+A facet is a way to group documents together based on a common value. For example, if you have a list of movies, you might want to group them by genre. You could then use the facet to filter the results to only show movies of a certain genre.
 
 A common use case is to use facets to create a filter. You can see this in most e-commerce sites. For example, you will see a list of categories on the left side of the page, and each category will have a number next to it. This number represents the number of products in that category.
 
@@ -22,4 +22,4 @@ A common use case is to use facets to create a filter. You can see this in most
         }
       }
     }
-```
+```