Use full name of format

Co-authored-by: Hugo van Kemenade <[email protected]>

Author: radarhere

docs/handbook/image-file-formats.rst

@@ -1549,7 +1549,7 @@ QOI
 
 .. versionadded:: 9.5.0
 
-Pillow identifies and reads QOI images.
+Pillow identifies and reads images in Quite OK Image format.
 
 XV Thumbnails
 ^^^^^^^^^^^^^

docs/releasenotes/9.5.0.rst

@@ -31,7 +31,7 @@ API Additions
 QOI file format
 ^^^^^^^^^^^^^^^
 
-Pillow can now read QOI images.
+Pillow can now read images in Quite OK Image format.
 
 Added ``dpi`` argument when saving PDFs
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^