doc: note the new "common/" subdir to the doc.go file
@@ -10,6 +10,9 @@ The "rbd" sub-package wraps APIs that handle RBD specific functions.
The "cephfs" sub-package wraps APIs that handle CephFS specific functions.
+The "common" sub-package contains sub-packages related to implementing
+common interfaces and utilities shared across the above.
+
Consult the documentation for each package for additional details.
*/
package ceph
