[thelounge/nginx] Return is not redirect

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

host_vars/irc.adm.crans.org.yml

@@ -20,10 +20,10 @@ loc_nginx:
             - "include \"/etc/nginx/snippets/options-proxypass.conf\""
         - filter: "~ ^/$"
           params:
-            - "redirect 302 https://irc.crans.org/web/"
+            - "return 302 https://irc.crans.org/web/"
         - filter: "/"
           params:
-            - "redirect 302 \"https://wiki.crans.org/VieCrans/UtiliserIrc#Via_l.27interface_web\""
+            - "return 302 \"https://wiki.crans.org/VieCrans/UtiliserIrc#Via_l.27interface_web\""
 
 loc_thelounge:
   public: "true"