Added change entry for medias

Author: panglesd

CHANGES.md

@@ -29,6 +29,8 @@
 - Added a `--asset-path` arg to `html-generate` (@panglesd, #1185)
 - Add a frontmatter syntax for mld pages (@panglesd, #1187)
 - Add a 'remap' option to HTML generation for partial docsets (@jonludlam, #1189)
+- Added an `html-generate-asset` command (@panglesd, #1185)
+- Added syntax for images, videos, audio (@panglesd, #1184)
 
 ### Changed