GoUsers: fix the position of CloudSign

[CloudSign](https://www.cloudsign.jp/) is a product of [Bengo4.com,Inc.](https://corporate.bengo4.com/), so it should be indented under Bengo4.com,Inc.
This can be confirmed from the fact that there is a description of `© 2015 Bengo4.com,Inc.` at the very bottom of [the CloudSign website](https://www.cloudsign.jp/).

Change-Id: I8e18fe22087c3c3a41fbafe1fc8a855ada603fef
Reviewed-on: https://go-review.googlesource.com/c/wiki/+/703736
Reviewed-by: Sean Liao <sean@liao.dev>

GoUsers.md

diff --git a/GoUsers.md b/GoUsers.md
index 263bf48..9bdb891 100644
--- a/GoUsers.md
+++ b/GoUsers.md
@@ -776,8 +776,8 @@
   * [BASE BANK, Inc.](https://basebank.jp/)
   * [Belong Inc.](https://about.belong.co.jp/)
   * [Bengo4.com,Inc.](https://corporate.bengo4.com/)
-  * [Bitkey Inc.](https://bitkey.co.jp/)
       * [CloudSign](https://www.cloudsign.jp/)
+  * [Bitkey Inc.](https://bitkey.co.jp/)
   * [Canary Inc.](https://corp.canary-app.jp/) - [github](https://github.com/SSK-TBD/), [twitter](https://x.com/Canary_Product), [engineering blog](https://zenn.dev/p/canary_techblog)
   * [CastingONE Inc.](https://casting-one.jp/)
   * [Check Inn, Inc.](https://checkinn.jp/)