Add --domain option to wrangler deploy

To document cloudflare/workers-sdk#10312

Author: petebacondarwin

src/content/docs/workers/wrangler/commands.mdx

@@ -310,6 +310,9 @@ None of the options for this command are required. Also, many can be set in your
 - `--routes`, `--route` string\[] optional
   - Routes where this Worker will be deployed.
   - For example: `--route example.com/*`.
+- `--domain`, string\[] optional
+  - Custom domains where this Worker will be deployed.
+  - For example: `--domain example.com`.
 - `--tsconfig` <Type text="string" /> <MetaInfo text="optional" />
   - Path to a custom `tsconfig.json` file.
 - `--minify` <Type text="boolean" /> <MetaInfo text="optional" />