Update cli-reference.mdx

src/content/docs/en/reference/cli-reference.mdx

@@ -64,6 +64,7 @@ Commands
               add  Add an integration.
             build  Build your project and write it to disk.
             check  Check your project for errors.
+       create-key  Create a cryptography key
               dev  Start the development server.
              docs  Open documentation in your web browser.
              info  List info about your current Astro setup.
@@ -80,10 +81,47 @@ Global Flags
         --verbose  Enable verbose logging.
          --silent  Disable all logging.
         --version  Show the version number and exit.
-           --open  Open the app in the browser on server start.
            --help  Show this help message.
 ```
 
+
+You can add the `--help` flag after any command to get a list of all the flags for that command.
+
+<PackageManagerTabs>
+  <Fragment slot="npm">
+  ```shell
+  # get a list of all flags for the `dev` command
+  npm run dev -- --help
+  ```
+  </Fragment>
+  <Fragment slot="pnpm">
+  ```shell
+  # get a list of all flags for the `dev` command
+  pnpm dev --help
+  ```
+  </Fragment>
+  <Fragment slot="yarn">
+  ```shell
+  # get a list of all flags for the `dev` command
+  yarn dev --help
+  ```
+  </Fragment>
+</PackageManagerTabs>
+
+The following message will display in your terminal:
+
+```bash
+astro dev [...flags]
+
+Flags
+                 --port  Specify which port to run on. Defaults to 4321.
+                 --host  Listen on all addresses, including LAN and public addresses.
+                 --host <custom-address>  Expose on a network IP address at <custom-address>
+                 --open  Automatically open the app in the browser on server start
+                --force  Clear the content layer cache, forcing a full rebuild.
+                --help (-h)  See all available flags.
+```
+
 :::note
 The extra `--` before any flag is necessary for `npm` to pass your flags to the `astro` command.
 :::
@@ -436,6 +474,10 @@ Enables verbose logging, which is helpful when debugging an issue.
 
 Enables silent logging, which will run the server without any console output.
 
+### `--open`
+
+Automatically opens the app in the browser on server start. Can be passed a full URL string (e.g. `--open http://example.com`) or a pathname (e.g. `--open /about`) to specify the URL to open.
+
 ## Global flags
 
 Use these flags to get information about the `astro` CLI.
@@ -444,10 +486,6 @@ Use these flags to get information about the `astro` CLI.
 
 Prints the Astro version number and exits.
 
-### `--open`
-
-Automatically opens the app in the browser on server start. Can be passed a full URL string (e.g. `--open http://example.com`) or a pathname (e.g. `--open /about`) to specify the URL to open.
-
 ### `--help`
 
 Prints the help message and exits.