Fix URL of ejabberd-contrib documentation section

Author: badlop

content/admin/configuration/toplevel.md

@@ -176,7 +176,7 @@ acme:
 `true | false`  
 
 Whether to allow installation of third-party modules or not. See
-[ejabberd-contrib](../../developer/extending-ejabberd/modules.md#ejabberd-contrib)
+[ejabberd-contrib](../../admin/guide/modules.md#ejabberd-contrib)
 documentation section. The default value is `true`.
 
 ## allow\_multiple\_connections
@@ -269,7 +269,7 @@ default value is `[mnesia]`.
 
 This is used by the contributed module `ejabberd_auth_http` that can
 be installed from the
-[ejabberd-contrib](https://github.com/processone/ejabberd-contrib) Git
+[ejabberd-contrib](../../admin/guide/modules.md#ejabberd-contrib) Git
 repository. Please refer to that module’s README file for details.
 
 ## auth\_password\_format
@@ -764,8 +764,8 @@ format, the `Options` must be one of the following:
 <!-- md:version added in [23.10](../../archive/23.10/index.md) -->
 
 Modules to install from
-[ejabberd-contrib](../../developer/extending-ejabberd/modules.md#ejabberd-contrib)
-at start time. The default value is an empty list of modules: `[]`.
+[ejabberd-contrib](../../admin/guide/modules.md#ejabberd-contrib) at
+start time. The default value is an empty list of modules: `[]`.
 
 ## jwt\_auth\_only\_rule
 

content/developer/ejabberd-api/index.md

@@ -24,7 +24,7 @@ All commands can be exposed through interfaces. Available interfaces are:
 - [WebAdmin](../../admin/guide/managing.md#web-admin) uses most commands to build the web pages,
 - [mod_configure](../../admin/configuration/modules.md#mod_configure) includes support for a few administrative tasks (using XMPP protocol itself through discovery and adhoc commands)
 
-The [ejabberd-contrib Github repository](https://github.com/processone/ejabberd-contrib) provides other interfaces that can be installed to execute ejabberd commands in different ways: `mod_rest` (HTTP POST service), `mod_shcommands` (ejabberd WebAdmin page).
+The [ejabberd-contrib Github repository](../../admin/guide/modules.md#ejabberd-contrib) provides other interfaces that can be installed to execute ejabberd commands in different ways: `mod_rest` (HTTP POST service), `mod_shcommands` (ejabberd WebAdmin page).
 
 Any module in ejabberd can add its own command(s) through ejabberd Erlang/Elixir API, making the whole system totally extensible. A third-party module can expose its own command(s) and feel like a real part of the system. A module that exposes commands allows server admins to expose it the way they want.
 

content/developer/extending-ejabberd/elixir.md

@@ -293,7 +293,7 @@ This example module requires the QRCodeEx Elixir library, and adds a simple web
 
 ## Elixir module in ejabberd-contrib
 
-Using [ejabberd-contrib](modules.md#ejabberd-contrib) it's possible to install additional ejabberd modules without compiling ejabberd, or requiring ejabberd source code.
+Using [ejabberd-contrib](../../admin/guide/modules.md#ejabberd-contrib) it's possible to install additional ejabberd modules without compiling ejabberd, or requiring ejabberd source code.
 This is useful if you install ejabberd using binary installers or a container image.
 
 And it's possible to write a custom module and [add your module](modules.md#add-module-to-ejabberd-modules) to an existing ejabberd installation...