fix(formats): rename mi18n format

It was renamed upstream, see
Draggable/i18n@f6f7fa4

docs/formats/mi18n.rst

@@ -1,25 +1,30 @@
 .. _mi18n-lang:
 
-mi18n lang files
-----------------
+draggable/i18n lang files
+-------------------------
 
 .. index::
     pair: mi18n lang; file format
+    pair: i18n lang; file format
 
 .. versionadded:: 4.7
 
-File format used for JavaScript localization by `mi18n`_. Syntactically it matches :ref:`javaprop`.
+.. note::
+
+   The library was former published as mi18n.
+
+File format used for JavaScript localization by `draggable/i18n`_. Syntactically it matches :ref:`javaprop`.
 
 .. seealso::
 
-    `mi18n`_,
+    `draggable/i18n`_,
     :doc:`tt:formats/properties`,
     :ref:`javaprop`,
     :ref:`updating-target-files`,
     :ref:`addon-weblate.properties.sort`,
     :ref:`addon-weblate.cleanup.generic`
 
-.. _mi18n: https://github.com/Draggable/mi18n
+.. _draggable/i18n: https://github.com/Draggable/i18n
 
 Weblate configuration
 +++++++++++++++++++++
@@ -33,5 +38,5 @@ Weblate configuration
 +--------------------------------+----------------------------------+
 | Template for new translations  | `Empty`                          |
 +--------------------------------+----------------------------------+
-| File format                    | `mi18n lang file`                |
+| File format                    | `draggabble/i18n lang file`      |
 +--------------------------------+----------------------------------+

weblate/formats/ttkit.py

@@ -2085,7 +2085,7 @@ def __init__(
 
 
 class PropertiesMi18nFormat(PropertiesUtf8Format):
-    name = gettext_lazy("mi18n lang file")
+    name = gettext_lazy("@draggable/i18n lang file")
     format_id = "mi18n-lang"
     new_translation = "\n"
     language_format = "bcp_legacy"