Update mkdocs.yml

mkdocs.yml

 site_name: Team A 2019 
-site_url: http://open-project-framework.pages.labranet.jamk.fi/opf-for-ttos0800-ttos0900-v1
+site_url: http://K8573-ttos0700.pages.labranet.jamk.fi/
 
 site_author: Team A
 
@@ -29,4 +29,4 @@ theme:
       primary: 'black'
       accent: 'orange'
     logo:
-      icon: 'accessible'
+      icon: 'tool'