Improvements
Added symbols that can be used in passwords.
Added the following symbols to those that can be used in passwords:
| Symbol | Symbol Name |
| , | comma |
| ' | single quotation mark/apostrophe |
| " | double quotation mark |
Related: What symbols can be used for passwords in Teachme Biz?
https://help.teachme.jp/hc/en-us/articles/900005509666