Fix README.md for DNS API.

dnsapi/README.md

@@ -524,16 +524,16 @@ For issues, please report to https://github.com/raidenii/acme.sh/issues.
 
 ## 28. Use Name.com API
 
-```
 You'll need to fill out the form at https://www.name.com/reseller/apply to apply
 for API username and token.
-```
 
+```
 export Namecom_Username="testuser"
 export Namecom_Token="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 ```
 
 And now you can issue certs with:
+
 ```
 acme.sh --issue --dns dns_namecom -d example.com -d www.example.com
 ```