Update README.md

README.md

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 * Public IP address of many hosting servers or self-hosted server in homelab is dynamic and it changes based on availability. For e.g. AWS EC2 instance (Without Elastic IP), Home Servers, GCP Cloud, etc.
 * This makes it difficult to set DNS for the server and require updating the IP address in GoDaddy DNS record so that requests are forwarded to correct IP address.
-* This tool or docker container will automatically update the DNS record with new IP address whenever IP address of server changes.
+* This tool and docker container will automatically update the DNS record with new IP address whenever IP address of server changes.
 
 **Features**