Added repo link

Author: Aklakan

docs/_config.yml

@@ -18,6 +18,11 @@ url: https://SmartDataAnalytics.github.io
 #  - javadoc
 #  - scaladocs
 
+# Aux links for the upper right navigation
+aux_links:
+  "GitHub":
+    - "https://github.com/SmartDataAnalytics/RdfProcessingToolkit"
+
 # Footer last edited timestamp
 last_edit_timestamp: true # show or hide edit time - page must have `last_modified_date` defined in the frontmatter
 last_edit_time_format: "%b %e %Y at %I:%M %p" # uses ruby's time format: https://ruby-doc.org/stdlib-2.7.0/libdoc/time/rdoc/Time.html