nixpkgs/neovim: add surround for JS template string

.config/nixpkgs/neovim/plugins.lua

@@ -266,7 +266,17 @@ require('mini.indentscope').setup()
 require('mini.comment').setup()
 
 -- surround actions
-require('mini.surround').setup()
+require('mini.surround').setup({
+  custom_surroundings = {
+    -- js template string
+    ['$'] = {
+      output = {
+        left = '`${',
+        right = '}`',
+      },
+    },
+  },
+})
 
 local spec_treesitter = require('mini.ai').gen_spec.treesitter