nvim: cmp: fix warning and comment, remove orgmode

.config/nvim/lua/my/completion.lua

@@ -23,7 +23,7 @@ if cmp and luasnip then
                 if cmp.visible() then
                     cmp.select_next_item()
                 elseif luasnip.expandable() then
-                    luasnip.expand()
+                    luasnip.expand({})
                 elseif luasnip.expand_or_jumpable() then
                     luasnip.expand_or_jump()
                 else
@@ -47,14 +47,13 @@ if cmp and luasnip then
             { name = 'dictionary' },
             { name = 'zsh' },
             { name = 'doxygen' },
-            { name = 'orgmode' },
         }, {
             { name = 'buffer' },
             -- { name = 'spell' },
         })
     })
 
-    -- Use buffer source for `/`
+    -- Use LSP symbols and buffer source for `/`
     cmp.setup.cmdline('/', {
         mapping = cmp.mapping.preset.cmdline(),
         sources = cmp.config.sources({