docs: Update changelog for version 0.12.0

changelog.rst

@@ -2,17 +2,17 @@
 BlocksDS changelog
 ##################
 
-Version DEV (2023-12-??)
-========================
+Version 0.12.0 (2023-12-26)
+===========================
 
 - ``libnds``:
 
   - Dot and dot-dot entries are now properly emitted in readdir(). In line
     with common software expectations, they mirror standard FAT filesystem
     behaviour, that is are present for all subdirectories. For NitroFS,
     these entries are emulated accordingly.
-  - The "d_ino" field in readdir() output is now correctly populated, to
-    match stat() and fstat().
+  - The ``d_ino`` field in ``readdir()`` output is now correctly populated, to
+    match ``stat()`` and ``fstat()``.
   - Added ``nitroFSOpenById()`` and ``nitroFSFopenById()`` functions, allowing
     opening files directly without paying the cost of a directory lookup.
   - Accordingly, NitroFS file systems which contain a FAT table but no FNT
@@ -22,11 +22,13 @@ Version DEV (2023-12-??)
 - SDK:
 
   - The default Makefiles have been simplified and now use compiler-provided
-    .specs files. In turn, a few additional features have been added:
+    ``.specs`` files. In turn, a few additional features have been added:
+
     - Support for picolibc's compiler define-based selection of the printf
       and scanf implementations.
-    - The __BLOCKSDS__ define, which can be used to detect a BlocksDS
+    - The ``__BLOCKSDS__`` define, which can be used to detect a BlocksDS
       environment during building.
+
   - Fixed camera initialization with the default ARM7 binary.
 
 - grit: