data/v2/csv/pokemon_moves.csv is no longer a well-formatted csv

[SiAce]

Issue:

data/v2/csv/pokemon_moves.csv is no longer a well-formatted csv after the commit 8453c31.
This commit introduced a new column mastery but didn't add the extra comma for the rows where mastery is empty. This change made this csv file no longer a well-formatted csv and could cause many csv parser to fail.

Steps to Reproduce:

1. Download data/v2/csv/pokemon_moves.csv
2. Check the content of the file and find out that there are 7 columns in the header but many rows are missing a trailing comma and there are only 5 commas (for example the first row)

Expected Behavior

Either

1. Add the missing comma for all rows where mastery is empty
2. Remove mastery column

[Naramsim]

Hi thanks for pointing it out!

Could you open a PR proposing a fix? Many thanks!

[Naramsim]

Edit, I fixed it here #1214 but found another problem in a different csv.