docs: remove learn more link from --custom-scalars-config

Author: DaleSeo

docs/source/command-reference.mdx

@@ -62,7 +62,7 @@ apollo-mcp-server [OPTIONS] --directory <DIRECTORY>
 | :-------------------------------------------------- |:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `-d, --directory <DIRECTORY>`                       | The working directory to use. Defaults the current working directory.                                                                                                                                                                |
 | `-s, --schema <SCHEMA>`                             | The path to the GraphQL API schema file.                                                                                                                                                                                             |
-| `-c, --custom-scalars-config <CUSTOM_SCALARS_CONFIG>` | The path to the GraphQL custom_scalars_config file. [Learn more](/apollo-mcp-server/guides/#custom-scalars).                                                                                                                         |
+| `-c, --custom-scalars-config <CUSTOM_SCALARS_CONFIG>` | The path to the GraphQL custom_scalars_config file.                               |
 | `-e, --endpoint <ENDPOINT>`                         | The GraphQL endpoint the server will invoke.<br />[default: `http://127.0.0.1:4000`]                                                                                                                                                 |
 | `--header <HEADERS>`                                | Headers to send to the endpoint.                                                                                                                                                                                                     |
 | `--sse-port <SSE_PORT>`                             | Start the server using the SSE transport on the given port (default: 5000).                                                                                                                                                          |