update docs

Author: hashemix

docs/guide/cli-command-options.md

@@ -1,18 +1,23 @@
 ## CLI Command Options
 
 ```sh
-Usage: rust-mcp-filesystem [OPTIONS] <ALLOWED_DIRECTORIES>...
+Usage: rust-mcp-filesystem [OPTIONS] [ALLOWED_DIRECTORIES]...
 
 Arguments:
-  <ALLOWED_DIRECTORIES>...
+  [ALLOWED_DIRECTORIES]...
           Provide a space-separated list of directories that are permitted for the operation.
           This list allows multiple directories to be provided.
 
           Example:  rust-mcp-filesystem /path/to/dir1 /path/to/dir2 /path/to/dir3
 
 Options:
   -w, --allow-write
-          Enables read/write mode for the app, allowing both reading and writing.
+          Enables read/write mode for the app, allowing both reading and writing. Defaults to disabled.
+
+  -t, --enable-roots
+          Enables dynamic directory access control via Roots from the MCP client side. Defaults to disabled.
+          When enabled, MCP clients that support Roots can dynamically update the allowed directories.
+          Any directories provided by the client will completely replace the initially configured allowed directories on the server.
 
   -h, --help
           Print help (see a summary with '-h')