Linked addressing manual to the sidebar menu.

docs/en/en.json

@@ -140,6 +140,10 @@
                         "path": "/manuals/building-blocks",
                         "name": "Building blocks"
                     },
+                    {
+                        "path": "/manuals/addressing",
+                        "name": "Addressing"
+                    },
                     {
                         "path": "/manuals/message-passing",
                         "name": "Message passing"