fix(ops/www): Redirect tvl.fyi/blog -> tvl.fyi

The blog index page is at the root and people may manually edit the
URL.

Change-Id: I6cdaaaee6223524a9e950584379cfac34f8be160

ops/modules/www/tvl.fyi.nix

@@ -33,6 +33,10 @@
 
           try_files $uri $uri.html $uri/ =404;
         }
+
+        location = /blog {
+          return 302 /;
+        }
       '';
     };
   };