fix DO link

Author: nxglabs

README.md

@@ -1,4 +1,4 @@
 # Deploy-OpenSign-to-Digital-Ocean
 Deploy OpenSign to Digital Ocean in one click
 
-[![Deploy on DigitalOcean](https://www.deploytodo.com/do-btn-blue.svg)](https://cloud.digitalocean.com/apps/new?repo=[https://github.com/Qik-Ai-Org/MongoDocker](https://github.com/OpenSignLabs/Deploy-OpenSign-to-Digital-Ocean)https://github.com/OpenSignLabs/Deploy-OpenSign-to-Digital-Ocean/tree/main)
+[![Deploy on DigitalOcean](https://www.deploytodo.com/do-btn-blue.svg)](https://cloud.digitalocean.com/apps/new?repo=https://github.com/OpenSignLabs/Deploy-OpenSign-to-Digital-Ocean/tree/main&refcode=30db1c901ab0)