Update docs a bit

doc/fff.1.md

@@ -1,5 +1,7 @@
-FFFUN
-=====
+FFF
+===
+
+Fastfoo function caller
 
 
 SYNOPSIS

doc/ffoo.3.md

@@ -17,7 +17,7 @@ SYNOPSIS
     debug "x=$x" "y=$y" "z=$z"          # debug:example: x=1
                                         # debug:example: y=2
                                         # debug:example: z=3
-    debug -v x:y:z                      # short for above!
+    debug -v x y z                      # short for above!
     echo "hello" | debug_pipe mypipe    # debug:PIPE mypipe: hello
 
     # more advanced functions