considerations.md: use clearer links to describe concepts

Signed-off-by: Erik Hollensbe <[email protected]>

Author: Erik Hollensbe

considerations.md

@@ -5,7 +5,7 @@ Instead they MUST ignore unknown properties.
 
 # Canonicalization
 
-OCI Images [are](descriptor.md) [content-addressable](image-layout.md).
+OCI Images are content-addressible. See [Descriptors](descriptor.md) and [Image Layout](image-layout.md) for more information.
 One benefit of content-addressable storage is easy deduplication.
 Many images might depend on a particular [layer](layer.md), but there will only be one blob in the [store](image-layout.md).
 With a different serialization, that same semantic layer would have a different hash, and if both versions of the layer are referenced there will be two blobs with the same semantic content.