fix: replace deprecated function

modules/programs/nvim/plugins/lua/nvim-lspconfig.lua

@@ -49,10 +49,10 @@ local on_attach_def = function(client, bufnr)
         l = {
           function()
             lsp_lines.toggle()
-            if vim.diagnostic.is_disabled() then
+            if vim.diagnostic.is_enabled() then
-              vim.diagnostic.enable()
-            else
               vim.diagnostic.disable()
+            else
+              vim.diagnostic.enable()
             end
           end,
           "LSP lines",