Add text about win os version ordering
@@ -98,6 +98,9 @@ image manifest based on the Content-Type returned in the HTTP response.
The optional os.version field specifies the operating system version,
for example `10.0.10586`.
+ Windows versions are ordered so that the first compatible image is
+ at the top of the list.
+
- **`os.features`** *array*
The optional os.features field specifies an array of strings,
