Move channel to Codeberg.

* .guix-channel: Change URL.
* README.org: Ditto.

.guix-channel

@@ -2,4 +2,4 @@
 (channel
  (version 0)
  (keyring-reference "keyring")
- (url "https://github.com/rakino/rosenthal"))
+ (url "https://codeberg.org/hako/rosenthal.git"))

README.org

@@ -1,7 +1,7 @@
 #+TITLE: Rosenthal - A certain Guix channel.
 
 ** About / 關於
-[[https://github.com/rakino/Rosenthal][Rosenthal]] is a [[https://guix.gnu.org/en/manual/devel/en/html_node/Channels.html][Guix channel]] maintained by [[https://ultrarare.space/][Hilton Chain]].
+[[https://codeberg.org/hako/Rosenthal][Rosenthal]] is a [[https://guix.gnu.org/en/manual/devel/en/html_node/Channels.html][Guix channel]] maintained by [[https://ultrarare.space/][Hilton Chain]].
 
 This channel was created for experiments, it currently holds some packages not ready for upstreaming to [[https://guix.gnu.org/][GNU Guix]].
 
@@ -9,7 +9,7 @@ Search for packages in Rosenthal and other channels with the [[https://toys.wher
 
 Unstable contents: packages not publicly exported, packages with a suffix like =-dev=, =-for-<some package>= or =-<full version>=, and all services are considered unstable.  They are subject to change and may be deleted at any time.
 
-[[https://github.com/rakino/Rosenthal][Rosenthal]] 是[[https://ultrarare.space/][左煉]]維護的 [[https://guix.gnu.org/en/manual/devel/zh-cn/html_node/Tong-Dao-.html][Guix 頻道]]。該頻道因試驗而起，如今存有一些還算有趣，但尚未準備好加入 [[https://guix.gnu.org/zh-CN/][GNU Guix]] 上游的軟件包。
+[[https://codeberg.org/hako/Rosenthal][Rosenthal]] 是[[https://ultrarare.space/][左煉]]維護的 [[https://guix.gnu.org/en/manual/devel/zh-cn/html_node/Tong-Dao-.html][Guix 頻道]]。該頻道因試驗而起，如今存有一些還算有趣，但尚未準備好加入 [[https://guix.gnu.org/zh-CN/][GNU Guix]] 上游的軟件包。
 
 [[https://git.sr.ht/~whereiseveryone/][whereis.みんな]]社區維護的 [[https://toys.whereis.みんな/][toys]] 實例，可用以檢索來自 Rosenthal 及其他 Guix 頻道的軟件包。
 
@@ -20,7 +20,7 @@ To update Rosenthal along with Guix via =guix pull=, write the following definit
 #+begin_src scheme
   (channel
    (name 'rosenthal)
-   (url "https://github.com/rakino/rosenthal")
+   (url "https://codeberg.org/hako/rosenthal.git")
    (branch "trunk")
    (introduction
     (make-channel-introduction
@@ -34,7 +34,7 @@ for example:
   ;; ~/.config/guix/channels.scm
   (cons* (channel
           (name 'rosenthal)
-          (url "https://github.com/rakino/rosenthal")
+          (url "https://codeberg.org/hako/rosenthal.git")
           (branch "trunk")
           (introduction
            (make-channel-introduction
@@ -51,7 +51,7 @@ Alternatively, Rosenthal can be used seperately with the following steps:
 
 Clone the repository.
 #+begin_src shell
-  git clone https://github.com/rakino/rosenthal.git rosenthal
+  git clone https://codeberg.org/hako/rosenthal.git rosenthal
   cd rosenthal
 #+end_src
 
@@ -64,7 +64,7 @@ Rosenthal 頻道定義如下，將其加入 =~/.config/guix/channels.scm= 以由
 #+begin_src scheme
   (channel
    (name 'rosenthal)
-   (url "https://github.com/rakino/rosenthal")
+   (url "https://codeberg.org/hako/rosenthal.git")
    (branch "trunk")
    (introduction
     (make-channel-introduction
@@ -78,7 +78,7 @@ Rosenthal 頻道定義如下，將其加入 =~/.config/guix/channels.scm= 以由
   ;; ~/.config/guix/channels.scm
   (cons* (channel
           (name 'rosenthal)
-          (url "https://github.com/rakino/rosenthal")
+          (url "https://codeberg.org/hako/rosenthal.git")
           (branch "trunk")
           (introduction
            (make-channel-introduction
@@ -95,7 +95,7 @@ Rosenthal 頻道定義如下，將其加入 =~/.config/guix/channels.scm= 以由
 
 首先克隆 git 倉庫
 #+begin_src shell
-  git clone https://github.com/rakino/rosenthal.git rosenthal
+  git clone https://codeberg.org/hako/rosenthal.git rosenthal
   cd rosenthal
 #+end_src