added descriptions to Diagnostic keymaps (#191)

* Update init.lua

* Update init.lua

init.lua

@@ -351,10 +351,10 @@ require('nvim-treesitter.configs').setup {
 }
 
 -- Diagnostic keymaps
-vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
-vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
-vim.keymap.set('n', '<leader>e', vim.diagnostic.open_float)
-vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist)
+vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, { desc = "Go to previous diagnostic message" })
+vim.keymap.set('n', ']d', vim.diagnostic.goto_next, { desc = "Go to next diagnostic message" })
+vim.keymap.set('n', '<leader>e', vim.diagnostic.open_float, { desc = "Open floating diagnostic message" })
+vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist, { desc = "Open diagnostics list" })
 
 -- LSP settings.
 --  This function gets run when an LSP connects to a particular buffer.