Update program name for CLI usage

Author: pdecat

README.md

@@ -40,7 +40,7 @@ The CLI provides the same functionality as the [Dashjoin JSONata CLI](https://gi
 
 ```
 % jsonata -h
-usage: jsonata.cli [-h] [-v] [-e <file>] [-i <arg>] [-ic <arg>] [-f {auto,json,string}] [-o <arg>] [-oc <arg>] [-time] [-c] [-b <json-string>]
+usage: jsonata [-h] [-v] [-e <file>] [-i <arg>] [-ic <arg>] [-f {auto,json,string}] [-o <arg>] [-oc <arg>] [-time] [-c] [-b <json-string>]
                    [-bf <file>] [-it]
                    [expr]
 

src/jsonata/cli/__main__.py

@@ -32,7 +32,7 @@
 def get_options(argv: Optional[list[str]] = None) -> argparse.ArgumentParser:
     """Parses command-line arguments.
     """
-    parser = argparse.ArgumentParser(prog="jsonata.cli", description="Pure Python JSONata CLI")
+    parser = argparse.ArgumentParser(prog="jsonata", description="Pure Python JSONata CLI")
     parser.add_argument(
         "-v", "--version", action='version', version='%(prog)s 0.6.0')