Typo Update ruby.md

Fix typo: "handhsake" to "handshake"

Author: famouswizard

docs/grpc/ruby.md

@@ -63,7 +63,7 @@ require 'grpc'
 require 'lightning_services_pb'
 
 # Due to updated ECDSA generated tls.cert we need to let gprc know that
-# we need to use that cipher suite otherwise there will be a handhsake
+# we need to use that cipher suite otherwise there will be a handshake
 # error when we communicate with the lnd rpc server.
 ENV['GRPC_SSL_CIPHER_SUITES'] = "HIGH+ECDSA"