Update Prettier config

Author: aarongustafson

.prettierrc

@@ -2,5 +2,14 @@
 	"arrowParens": "always",
 	"singleQuote": true,
 	"tabWidth": 4,
-	"useTabs": true
+	"useTabs": true,
+	"overrides": [
+		{
+			"files": "*.md",
+			"options": {
+				"useTabs": false,
+				"tabWidth": 2
+			}
+		}
+	]
 }