Tweak text to be a little more explicit

acts.conf.sample

@@ -21,11 +21,11 @@
 tarsnapbackupoptions="--one-file-system --humanize-numbers"
 
 # calltarsnap
-# The function that invokes the tarsnap command.
-# It will receive command line parameters for tarsnap as arguments.
+# Wrapper function that invokes the tarsnap command.
 # Use this when you need to run tarsnap in a pipeline.
+# The actual tarsnap arguments and commands are passed via "$@".
 # Default: calltarsnap() { $tarsnap "$@"; }
-#calltarsnap() { pass show tarsnap-passphrase | $tarsnap --passphrase-stdin "$@" }
+#calltarsnap() { pass show tarsnap-passphrase | $tarsnap --passphrase-stdin "$@"; }
 
 # verbose
 # Log verbosity. Output is written to stderr.