Change default value to avoid issue with doc

Author: dgarros

docs/docs/infrahubctl/infrahubctl-graphql.mdx

@@ -47,7 +47,7 @@ $ infrahubctl graphql generate-return-types [OPTIONS] [QUERY]
 
 **Arguments**:
 
-* `[QUERY]`: Location of the GraphQL query file(s).  [default: /Users/damien/projects/infrahub-sdk-python-pink]
+* `[QUERY]`: Location of the GraphQL query file(s).
 
 **Options**:
 

infrahub_sdk/ctl/graphql.py

@@ -112,12 +112,14 @@ async def export_schema(
 @app.command()
 @catch_exception(console=console)
 async def generate_return_types(
-    query: Path = typer.Argument(Path.cwd(), help="Location of the GraphQL query file(s)."),
+    query: Path | None = typer.Argument(None, help="Location of the GraphQL query file(s)."),
     schema: Path = typer.Option("schema.graphql", help="Path to the GraphQL schema file."),
     _: str = CONFIG_PARAM,
 ) -> None:
     """Create Pydantic Models for GraphQL query return types"""
 
+    query = Path.cwd() if query is None else query
+
     # Load the GraphQL schema
     if not schema.exists():
         raise FileNotFoundError(f"GraphQL Schema file not found: {schema}")