Update navigation.yml

Author: zyaocoder

_data/navigation.yml

@@ -5,23 +5,17 @@
 # prevent it from being included in the site.
 
 main:
+  - title: "News"
+    url: /markdown/
+    
   - title: "Publications"
     url: /publications/
 
-  - title: "Talks"
-    url: /talks/    
-
   - title: "Teaching"
     url: /teaching/    
 
-  - title: "Portfolio"
-    url: /portfolio/
+  - title: "Services"
+    url: /services/  
 
-  - title: "Blog Posts"
-    url: /year-archive/
-    
   - title: "CV"
     url: /cv/
-    
-  - title: "Guide"
-    url: /markdown/