Update README.md

Author: CodeConfidant

README.md

@@ -58,5 +58,5 @@
     Generate Self-Signed Private Key (2048 Bit Key Length) & Certificate:
     sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout domainName.key -out domainName.crt
 
-    Generate PEM File Certificate (For Secure Email Messaging):
+    Generate Diffie-Hellman Parameters (2048 Bit Key Length):
     sudo openssl dhparam -out dhparam.pem 2048