Adding description of restrictions on creation of a new team name (#62448)

Author: Srabasti

airflow-core/src/airflow/cli/cli_config.py

@@ -1444,6 +1444,9 @@ class GroupCommand(NamedTuple):
     ActionCommand(
         name="create",
         help="Create a team",
+        description=(
+            "Create a team. Team names must be 3-50 characters long and contain only alphanumeric characters, hyphens, and underscores.\n"
+        ),
         func=lazy_load_command("airflow.cli.commands.team_command.team_create"),
         args=(ARG_TEAM_NAME, ARG_VERBOSE),
     ),

airflow-core/src/airflow/cli/commands/team_command.py

@@ -61,7 +61,7 @@ def _extract_team_name(args):
 @providers_configuration_loaded
 @provide_session
 def team_create(args, session=NEW_SESSION):
-    """Create a new team."""
+    """Create a new team. Team names must be 3-50 characters long and contain only alphanumeric characters, hyphens, and underscores."""
     team_name = _extract_team_name(args)
 
     # Check if team with this name already exists