Update doc[ci skip]

doc/curl.ldoc

@@ -131,6 +131,7 @@ do
 -- <br/>Returned data types: `response`, `header`, `data`, `error`, `done`.
 -- <br/>Note. response data may appeare several times (e.g. if you proceed http request 
 --  with digest auth you should get 401 and 200 responses).
+-- <br/> Easy handle is removed at the end of the operation (when get `done` or `error` row).
 --
 -- @treturn Iterator iterator for generic for
 --

examples/cURLv3/multi.lua

@@ -12,6 +12,6 @@ local f1 = io.open("lua.html",    "w+b")
 local f2 = io.open("luajit.html", "w+b")
 
 for data, type, easy in m:iperform() do
-    if type == "data" and c1 == easy then f1:write(data) end
-    if type == "data" and c2 == easy then f2:write(data) end
+  if type == "data" and c1 == easy then f1:write(data) end
+  if type == "data" and c2 == easy then f2:write(data) end
 end