feat(nvim): update blink config

config/nvim/lua/plugins/blink.lua

@@ -91,20 +91,18 @@ return {
       -- default list of enabled providers defined so that you can extend it
       -- elsewhere in your config, without redefining it, via `opts_extend`
       sources = {
-        providers = {
+        default = {
-          copilot = {
-            name = 'copilot',
-            module = 'blink-cmp-copilot',
-          },
-        },
-        completion = {
-          enabled_providers = {
           'lsp',
           'copilot',
           'path',
           'snippets',
           'buffer',
         },
+        providers = {
+          copilot = {
+            name = 'copilot',
+            module = 'blink-cmp-copilot',
+          },
         },
       },