Simplify testing with TLS (#4095)

plugins/inputs/apache/README.md

@@ -21,11 +21,11 @@ Typically, the `mod_status` module is configured to expose a page at the `/serve
   ## Maximum time to receive response.
   # response_timeout = "5s"
 
-  ## Optional SSL Config
-  # ssl_ca = "/etc/telegraf/ca.pem"
-  # ssl_cert = "/etc/telegraf/cert.pem"
-  # ssl_key = "/etc/telegraf/key.pem"
-  ## Use SSL but skip chain & host verification
+  ## Optional TLS Config
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
   # insecure_skip_verify = false
 ```