fix typo

getssl

@@ -927,7 +927,7 @@ if [[ $VALIDATE_VIA_DNS == "true" ]]; then
       else
         if [[ $ntries -lt 100 ]]; then
           ntries=$(( ntries + 1 ))
-          info "testing DNS for $d. Attempt $ntries/100 completed. waiting 10 secs before testing verify again"
+          info "testing DNS for ${d}. Attempt $ntries/100 completed. waiting 10 secs before testing verify again"
           sleep 10
         else
           debug "dns check failed - removing existing value"