[PATCH proxmox] oci: update doc comment of parse_and_extract_image

[Filip Schauer <f.schauer@proxmox.com>]

The function does not return the entire image config, only the optional
execution parameters contained in the image config.

Signed-off-by: Filip Schauer <f.schauer@proxmox.com>
---
 proxmox-oci/src/lib.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/proxmox-oci/src/lib.rs b/proxmox-oci/src/lib.rs
index 9ef16d41..b274e46a 100644
--- a/proxmox-oci/src/lib.rs
+++ b/proxmox-oci/src/lib.rs
@@ -101,7 +101,7 @@ pub enum ProxmoxOciError {
     ExtractError(#[from] ExtractError),
 }
 
-/// Extract the rootfs of an OCI image tar and return the image config.
+/// Extract the rootfs of an OCI image tar and return its execution parameters.
 ///
 /// # Arguments
 ///
@@ -109,6 +109,11 @@ pub enum ProxmoxOciError {
 /// * `rootfs_path` - Destination path where the rootfs will be extracted to
 /// * `arch` - Optional CPU architecture used to pick the first matching manifest from a multi-arch
 ///   image index. If `None`, the first manifest will be used.
+///
+/// # Returns
+///
+/// On success, this returns the optional container execution parameters
+/// if present in the image configuration.
 pub fn parse_and_extract_image<P: AsRef<Path>>(
     oci_tar_path: P,
     rootfs_path: P,
-- 
2.47.3