Fixed nginx proxy_pass directive

DEPLOY.md

@@ -248,7 +248,7 @@ ### Nginx
 
     location /_matrix/ {
         # TCP
-        proxy_pass http://127.0.0.1:6167$request_uri;
+        proxy_pass http://127.0.0.1:6167;
 
         # UNIX socket
         #proxy_pass http://backend;