Completed Order Page: Change Invoice Icon

[mariobehling]

Please use the linked icon for the Invoice button on the completed order page: https://fontawesome.com/icons/file-invoice?style=solid

[Gautam-Arora24]

Working on this

[Raunaksingh100]

@Gautam-Arora24 are you working on this if not can i fixed this issue.

[Gautam-Arora24]

@Raunaksingh100 I am working on this