Update documentation of commit command to show image reference is optional

Following
Commit ba1d1304a67b ("make image reference for commit optional")

Updates usage text used by cobra and markdown document used to generate MAN page.

Fixes: #5145

Signed-off-by: Allan Jacquet-Cretides <allan.jacquet@gmail.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/docs/source/markdown/podman-commit.1.md b/docs/source/markdown/podman-commit.1.md
index 042ec7934..66d8811aa 100644
--- a/docs/source/markdown/podman-commit.1.md
+++ b/docs/source/markdown/podman-commit.1.md
@@ -4,7 +4,7 @@
 podman\-commit - Create new image based on the changed container
 
 ## SYNOPSIS
-**podman commit** [*options*] *container* *image*
+**podman commit** [*options*] *container* [*image*]
 
 **podman container commit** [*options*] *container* [*image*]
 
@@ -18,6 +18,7 @@ image. If this is not desired, the `--pause` flag can be set to false. When the
 is complete, Podman will print out the ID of the new image.
 
 If *image* does not begin with a registry name component, `localhost` will be added to the name.
+If *image* is not provided, the values for the `REPOSITORY` and `TAG` values of the created image will each be set to `<none>`.
 
 ## OPTIONS
 
@@ -86,6 +87,11 @@ $ podman commit -q --pause=false containerID image-committed
 e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8
 ```
 
+```
+$ podman commit containerID
+e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8
+```
+
 ## SEE ALSO
 podman(1), podman-run(1), podman-create(1)