fix(extras): rename lspconfig.server_configurations to lspconfig.configs (#4518)

## Description


bedb2a0df1
introduces a change to the Lua module structure for `nvim-lspconfig`
that broke `tailwindcss`. Tried to also address all the other usages of
`lspconfig.server_configurations` within the ecosystem.

## Screenshots

![mason-lspconfig
nvim](https://github.com/user-attachments/assets/bc9f80f0-3386-436f-8f86-abfcb311cec2)


## Checklist

- [X] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

lua/lazyvim/plugins/extras/lang/lean.lua

@@ -17,7 +17,7 @@ return {
     --
     -- false to disable, otherwise should be a table of options to pass to `leanls`
     --
-    -- See https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#leanls for details.
+    -- See https://github.com/neovim/nvim-lspconfig/blob/master/doc/configs.md#leanls for details.
     -- In particular ensure you have followed instructions setting up a callback
     -- for `LspAttach` which sets your key bindings!
     lsp = {