adding small suggestions

Signed-off-by: T.J. Kotha <[email protected]>

scripts/o3de/o3de/export_project.py

@@ -198,7 +198,7 @@ def get_default_asset_platform():
 
 def get_platform_installer_folder_name(selected_platform=None):
     if not selected_platform:
-        selected_platform = platform.lower()
+        selected_platform = CURRENT_PLATFORM
     host_platform_to_installer_name_map = {'pc': 'Windows',
                                            'linux': 'Linux',
                                            'mac': 'Mac'}