Adjust License linking #28

Author: TobiasNx

docs/LICENSE renamed to LICENSE

@@ -7,6 +7,11 @@ url: https://metafacture.github.io/metafacture-documentation
 aux_links:
   Metafacture Documentation on Github: https://github.com/metafacture/metafacture-documentation
 
+# External navigation links
+nav_external_links:
+  - title: LICENSE
+    url: https://github.com/metafacture/metafacture-core/blob/master/LICENSE
+
 # Set a path/url to a logo that will be displayed instead of the title
 logo: "/assets/images/metafacture_small.png"
 favicon_ico: "/assets/images/favicon.ico"
@@ -18,7 +23,7 @@ favicon_ico: "/assets/images/favicon.ico"
 back_to_top: true
 back_to_top_text: "Back to top"
 
-footer_content: "Metafacture Documentation is maintained by the <a href=\"https://lobid.org/team-en/\">Open infrastructure team of hbz.</a>"
+footer_content: 'Metafacture Documentation is maintained by the <a href="https://lobid.org/team-en/">Open infrastructure team of hbz.</a>'
 
 # Footer last edited timestamp
 last_edit_timestamp: true # show or hide edit time - page must have `last_modified_date` defined in the frontmatter
@@ -48,4 +53,4 @@ callouts:
     color: purple
   warning:
     title: Warning
-    color: red  
+    color: red