fix blink cmp completion mapping

lua/crentist/lazy/completion.lua

@@ -6,8 +6,7 @@ return {
         { 'L3MON4D3/LuaSnip', version = 'v2.*' }
     },
     -- use a release tag to download pre-built binaries
-    -- version = 'v0.*',
-    build = 'cargo build --release',
+    version = 'v0.*',
 
     opts = {
         snippets = {
@@ -21,7 +20,12 @@ return {
             jump = function(direction) require('luasnip').jump(direction) end,
         },
 
-        keymap = { preset = 'enter' },
+        completion = { list = { selection = "auto_insert" } },
+        keymap = {
+            preset = 'enter',
+            ['<Tab>'] = { 'select_next', 'snippet_forward', 'fallback' },
+            ['<S-Tab>'] = { 'select_prev', 'snippet_backward', 'fallback' },
+        },
 
         appearance = {
             use_nvim_cmp_as_default = true,