fix: write_column should be a list

.editorconfig

@@ -9,3 +9,6 @@ insert_final_newline = true
 indent_size = 2
 indent_style = space
 trim_trailing_whitespace = true
+
+[*.py]
+indent_size = 4

README.md

@@ -12,6 +12,7 @@
   methods in GitHub).
 - Go to the Migration Kit folder: `spacelift-migration-kit`.
 - Install the Python dependencies and the `spacemk` command in a Python virtual environment: `poetry install`.
+  - To install poetry: `pip install poetry`.
 - Activate the Python virtual environment: `poetry shell`.
 
 ## Usage

spacemk/exporters/base.py

@@ -163,11 +163,11 @@ def _save_report_to_file(self, data: dict) -> None:
                 column = 0
                 for key, value in sorted(pivoted_entity_type_data.items()):
                     # Skip data structures
-                    if type(value) in [dict, list, tuple, set]:
+                    if type(value) in [dict, tuple, set]:
                         continue
 
                     worksheet.write(0, column, key)
-                    worksheet.write_column(1, column, value)
+                    worksheet.write_column(1, column, value if type(value) is list else [value])
                     column += 1
 
         workbook.close()