fix nvim cmp indentation issue for nix files

I removed the cmdline source from cmp and that fixed it

.config/nvim/lua/blake/lsp.lua

@@ -145,7 +145,6 @@ M.cmp = function()
          { name = 'treesitter' },
          { name = 'calc' },
          -- { name = 'spell' },
-         { name = 'cmdline' },
          { name = 'emoji' },
          { name = 'buffer' },
          { name = 'path' },
@@ -196,13 +195,13 @@ M.cmp = function()
    cmp.setup.cmdline('/', search_config)
    cmp.setup.cmdline('?', search_config)
     -- `:` cmdline setup.
-    cmp.setup.cmdline(':', {
+   cmp.setup.cmdline(':', {
       mapping = cmp.mapping.preset.cmdline(),
       sources = cmp.config.sources({
-        { name = 'path' },
-        { name = 'cmdline' },
+         { name = 'path' },
+         { name = 'cmdline' },
       })
-    })
+   })
 end -- <<<
 
 -- lspconfig >>>