Updated config, Markdown file extension

system/config/config.ini

@@ -34,7 +34,7 @@ ContentRootDir: default/
 ContentHomeDir: home/
 ContentPagination: page
 ContentDefaultFile: page.md
-ContentExtension: .mx
+ContentExtension: .md
 ConfigExtension: .ini
 DownloadExtension: .download
 TextFile: text.ini