Changed output file to align with GitHub Pages requirements.

Author: KDean-Dolphin

pandoc-spec.options.json

@@ -4,5 +4,5 @@
   "headerFile": "header.html",
   "footerFile": "footer.html",
   "inputFile": "index.md",
-  "outputFile": "index.html"
+  "outputFile": "_site/index.html"
 }