Don't accept forward slash character for nicknames

installation/pleroma.nginx

@@ -82,15 +82,15 @@ server {
     }
 
     # Uncomment this if you want notice compatibility routes for frontends like Soapbox.
-    # location ~ /@.+/([^/]+) {
+    # location ~ /@([^/]+)/([^/]+) {
     #     proxy_pass http://phoenix/notice/$1;
     # }
     #
-    # location ~ /@.+/posts/([^/]+) {
+    # location ~ /@([^/]+)/posts/([^/]+) {
     #     proxy_pass http://phoenix/notice/$1;
     # }
     #
-    # location ~ /.+/status/([^/]+) {
+    # location ~ /([^/]+)/status/([^/]+) {
     #     proxy_pass http://phoenix/notice/$1;
     # }