fix(mappings): fix deprecated method for which-key group names

Author: mehalter

src/content/docs/recipes/mappings.mdx

@@ -29,9 +29,9 @@ return {
             end,
             desc = "Pick to close",
           },
-          -- tables with the `name` key will be registered with which-key if it's installed
+          -- tables with just a `desc` key will be registered with which-key if it's installed
           -- this is useful for naming menus
-          ["<Leader>b"] = { name = "Buffers" },
+          ["<Leader>b"] = { desc = "Buffers" },
           -- quick save
           -- ["<C-s>"] = { ":w!<cr>", desc = "Save File" },  -- change description but the same command
         },