Fix typo in luacheck
Error 411 is for redefining local variables and error 412 is for redefining
function arguments.
In this case we actually want error 411 because `local err` and `local errs` are
typically local variables used to store the return value of a Lua function.
@@ -17,7 +17,7 @@ ignore = {
"212/self", -- Unused argument "self"
"411/ok", -- Redefining local "ok"
- "412/errs?", -- Redefining local "err" or "errs"
+ "411/errs?", -- Redefining local "err" or "errs"
"421/ok", -- Shadowing local "ok"
"421/errs?", -- Shadowing local "err" or "errs"
