docs: update initial seed data section for clarity

docs/contributing/howto/create-initial-data-migrations.md

@@ -80,8 +80,8 @@ It is required that there be data in the first column of the sheet.
 
 - Look for name of the last migration file in `core/data/migrations` directory
 
-- Create a script in the same directory named `<number>_<modelnameinlowercase>_seed.py` with the following contents and
-    replace `<model in lower case>` and `<name of last script>` with appropriate values:
+- Create a script in the same directory named `<number>_<modelname_in_lower_case>_seed.py` with the following contents and
+    replace `<modelname_in_lower_case>`, `ModelNameInPascalCase`, and `<name of last script>` with appropriate values:
 
     ```py
     from django.db import migrations
@@ -132,4 +132,6 @@ It is required that there be data in the first column of the sheet.
         operations = [migrations.RunPython(forward, reverse)]
     ```
 
+In this example `011_author_seed` is the name of the last migration file in `core/data/migrations`. You will also need to update this to the last python file in `core/data/migrations` having the format `xxxx_<modename_in_lower_case>_seed.py`.
+
 [pd-data-spreadsheet]: https://docs.google.com/spreadsheets/d/1x_zZ8JLS2hO-zG0jUocOJmX16jh-DF5dccrd_OEGNZ0/