Fixed formatting, added standalone build option

source/stroganoff.md

@@ -1,6 +1,6 @@
 # Stroganoff
 
-### Ingredients
+## Ingredients
 
 - **3 tbsp.** extra-virgin olive oil, divided
 - **8 oz** crimini mushrooms, sliced
@@ -13,7 +13,7 @@
 - **1/2 cup** sour cream
 - fresh parsley for serving
 
-### Instructions
+## Instructions
 
 1. Heat 2 tablespoons of **oil** over medium heat in a large pot.
    Add the **onion**, season with salt and pepper,
@@ -43,3 +43,5 @@
 
 8. Serve with **fresh parsley**.
 
+<div style="page-break-after: always;"></div>
+<div style="page-break-after: always;"></div>