This is super easy to fix!
So go into your Shopify dashboard and click the "settings" tab, from there you will see "Store Languages", click that.
The default language will be English, go to "Change Theme Language", in the "search translations" bar type "read more". It will pull everything that says "read more", and it will specifically pull the blog. It will be under Blog/General. Change the "read more", to whatever you would like it to say
Let me know if you need any help!
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Feel free to email me at firstname.lastname@example.org
Raquel Marie: Shopify Development & Conversion Expert | Shopify Theme Customization & Development | Shopify Design | Conversion Design