fix(health): existing packages on windows. Fixes #474

Author: folke

lua/lazy/health.lua

@@ -20,7 +20,7 @@ function M.check()
   local existing = false
   for _, site in pairs(sites) do
     for _, packs in ipairs(vim.fn.expand(site .. "/pack/*", false, true)) do
-      if not packs:find("/dist$") and vim.loop.fs_stat(packs) then
+      if not packs:find("[/\\]dist$") and vim.loop.fs_stat(packs) then
         existing = true
         vim.health.report_warn("found existing packages at `" .. packs .. "`")
       end