Removed .md from lines 75 & 85

Author: RoseHJM

articles/dev-box/.openpublishing.redirection.dev-box.json

@@ -72,7 +72,7 @@
     },
     {
       "source_path_from_root": "/articles/dev-box/how-to-use-dev-home-customize-dev-box.md",
-      "redirect_url": "/azure/dev-box/how-to-write-customization-file.md",
+      "redirect_url": "/azure/dev-box/how-to-write-customization-file",
       "redirect_document_id": false
     },
     {
@@ -82,7 +82,7 @@
     },
     {
       "source_path_from_root": "/articles/dev-box/how-to-use-dev-home-create-dev-box.md",
-      "redirect_url": "/azure/dev-box/how-to-create-dev-boxes-developer-portal.md",
+      "redirect_url": "/azure/dev-box/how-to-create-dev-boxes-developer-portal",
       "redirect_document_id": false
     },
     {