Remove namespace requirement from Containers image

Once cloudflare/workers-sdk#9813 is merged,
users will not need to add their account ID namespace to the image name.

Author: gpanders

src/content/docs/containers/image-management.mdx

@@ -67,7 +67,7 @@ Then you can specify the URL in the image attribute:
 ```json
 {
 	"containers": {
-		"image": "registry.cloudflare.com/your-namespace/your-image:tag"
+		"image": "registry.cloudflare.com/your-image:tag"
 		// ...rest of config...
 	}
 }
@@ -86,7 +86,7 @@ wrangler containers push <image>:<tag>
 ```
 
 :::note
-We plan to allow configuring public images directly in wrangler config. Cloudflare will
+We plan to allow configuring public images directly in Wrangler config. Cloudflare will
 download your image, optionally using auth credentials, then cache it globally in the Cloudflare Registry.
 
 This is not yet available.
@@ -107,4 +107,4 @@ These limits will likely increase in the future.
 :::
 
 Delete images with `wrangler containers delete` to free up space, but note that reverting a
-Worker to a previous version that uses a deleted image will then error.
+Worker to a previous version that uses a deleted image will then error.