small changelog polish

ChangeLog

@@ -4,28 +4,26 @@
 - add "extend", "background" and "premultiplied" to mapim to fix edge
   antialiasing [GavinJoyce]
 - add support for HDR HEIC and AVIF images
-- add spngsave
+- add vips_spngsave()
 - jpeg2000 load left-justifies bitdepth
-- add "password" option to pdfload
+- add "password" option to pdfload, fix byte ordering of "background"
 - add vips_operation_block_set(), vips_operation_block_untrusted_set()
 - improve the pixel rng
 - new meson build system [tintou]
 - improve introspection annotations [tintou]
-- add @unlimited to heifload [lovell]
-- edge antialiasing for mapim with @background, @extend and @premultiplied
+- add "unlimited" to heifload [lovell]
 - add support for regions in C++ API [shado23]
-- add maxerror to gifsave [dloebl]
+- add "maxerror" to gifsave [dloebl]
 - update libnsgif API [tlsa]
 - deprecate "properties" option to dzsave (now always on)
 - always set the min stack size for pthreads, if we can
-- add fail-on to thumbnail
+- add "fail_on" to thumbnail
 - add "gap" option to vips_reduce[hv]() and vips_resize() [kleisauke]
 - add "ceil" option to vips_shrink() [kleisauke]
 - quality improvements for image resizing [kleisauke]
 
-
 26/11/21 started 8.12.3
-- better arg checking for hist_find_ndim [travisbell]
+- better arg checking for vips_hist_find_ndim() [travisbell]
 - fix thumbnail with CMYK output [AdamGaskins]
 - fix size_t / ssize_t confusion [flga]