fix: contradictory lazy.nvim installation spec (#1506)

setting `lazy=false` means eagerly loading the plugin while `event =
"VeryLazy"` suggests the plugin should be lazy loaded

https://lazy.folke.io/spec/lazy_loading

> Plugins will be lazy-loaded when one of the following is true:
>
> * The plugin only exists as a dependency in your spec
> * It has an event, cmd, ft or keys key
> * config.defaults.lazy == true

see example

6c3bda4aca/lua/lazy/example.lua (L58-L60)

README.md

@@ -57,7 +57,6 @@ For building binary if you wish to build from source, then `cargo` is required.
 {
   "yetone/avante.nvim",
   event = "VeryLazy",
-  lazy = false,
   version = false, -- Set this to "*" to always pull the latest release version, or set it to false to update to the latest code changes.
   opts = {
     -- add any opts here