fix(types): fix path_map types after accepting nil

Author: sudo-tee

lua/opencode/types.lua

@@ -119,8 +119,8 @@
 ---@field spawn_command? fun(port: number, url: string): number | nil -- Optional function to start the server, may return server PID
 ---@field kill_command? fun(port: number, url: string): nil -- Optional function to stop the server when auto_kill is true
 ---@field auto_kill boolean -- Kill spawned servers when nvim exits (default: true)
----@field path_map string | fun(host_path: string): string | nil -- Map host paths to server paths
----@field reverse_path_map fun(server_path: string): string | nil -- Map server paths back to host paths
+---@field path_map (string | fun(host_path: string): string) | nil -- Map host paths to server paths
+---@field reverse_path_map (fun(server_path: string): string) | nil -- Map server paths back to host paths
 
 ---@class OpencodeUIConfig
 ---@field enable_treesitter_markdown boolean