Edited the explanation for the passwords section

packetbeat.conf

@@ -90,8 +90,10 @@ device = "any"
 selectors = ["pinger"]
 
 [passwords]
-# Uncomment the following to hide user passwords from HTTP messages
-# A list of possible keywords to hide that may contain the user password
-# hide_keywords = ["pass=", "password=", "passwd=", "Password="]
+# Uncomment the following to hide certain parameters from HTTP POST
+# requests. The value of the parameters will be replaced with '*' characters
+# This is generally useful for avoiding storing user passwords or other
+# sensitive information.
+#hide_keywords = ["pass=", "password=", "passwd=", "Password="]
 
 # vim: set ft=toml: