You can customize Quotation strings creating your own translation files:
Use Poedit to create and edit it.
1- Using poedit, open woocommerce-quotation.po (you´ll find it in woocommerce-quotation/
2- Save it as woocommerce-quotation-en_US.po
3- Translate only the text strings that you need to customize, eg: ‘Return to Shop’
4- Save (When you save the file woocommerce-quotation-en_US.mo will be created in the same directory)
5- Upload woocommerce-quotation-en_US.po and woocommerce-quotation-en_US.mo to:
wp-content
– languages
– – plugins
– – – woocommerce-quotation-en_US.po
– – – woocommerce-quotation-en_US.mo