Modified the changes

Author: Karan-SF4772

Word-document/Insert-PageBreak-Before-Heading-Paragraphs/.NET/Insert-PageBreak-Before-Heading-Paragraphs/Program.cs

@@ -12,7 +12,10 @@ public static void Main(string[] args)
             List<Entity> entities = document.FindAllItemsByProperty(EntityType.Paragraph, "StyleName", "Heading 1");
 
             if (entities == null)
+            {
                 Console.WriteLine("No paragraphs with the style 'Heading 1' found.");
+                return;
+            }
             foreach (Entity entity in entities)
             {
                 // Check if the entity is a paragraph