Ensure we do not append the altLink to any images as it blows up if we do

OurUmbraco.Site/Views/Lesson.cshtml

@@ -4,7 +4,8 @@
     Layout = null;
 
     var path = HttpContext.Current.Items[MarkdownLogic.MarkdownPathKey].ToString();
-    var ml = new MarkdownLogic(path) { PrefixLinks = false, AppendAltLessonLink = false };
+    var ml = new MarkdownLogic(path) { PrefixLinks = false, AppendAltLessonLink = true };
+
     var markdown = ml.DoTransformation();
 }
 

OurUmbraco/Documentation/Busineslogic/MarkdownLogic.cs

@@ -82,7 +82,8 @@ namespace OurUmbraco.Documentation.Busineslogic
             else
                 mdUrlTag.TrimEnd('/');
 
-            if (AppendAltLessonLink)
+            //Need to ensure we dont append the image links as they 404 if we add altTemplate
+            if (AppendAltLessonLink && rawUrl.StartsWith("images/") == false)
             {
                 return mdUrlTag.Replace(rawUrl, $"{rawUrl.EnsureNoDotsInUrl()}?altTemplate=Lesson");
             }