fix(mappings): fix require typo

lua/plugins/mappings.lua

@@ -16,7 +16,7 @@ return {
         --   desc = "Next buffer",
         -- },
         -- H = {
-        --   function() require("atsrocore.buffer").nav(-(vim.v.count > 0 and vim.v.count or 1)) end,
+        --   function() require("astrocore.buffer").nav(-(vim.v.count > 0 and vim.v.count or 1)) end,
         --   desc = "Previous buffer",
         -- },