docs: rm incorrect -p alias from docs (#6721)

Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>
Co-authored-by: rekram1-node <[email protected]>

packages/web/src/content/docs/cli.mdx

@@ -33,7 +33,7 @@ opencode [project]
 | ------------ | ----- | ------------------------------------------ |
 | `--continue` | `-c`  | Continue the last session                  |
 | `--session`  | `-s`  | Session ID to continue                     |
-| `--prompt`   | `-p`  | Prompt to use                              |
+| `--prompt`   |       | Prompt to use                              |
 | `--model`    | `-m`  | Model to use in the form of provider/model |
 | `--agent`    |       | Agent to use                               |
 | `--port`     |       | Port to listen on                          |