fix buildmode default in docs

Author: Perryvw

docs/configuration.md

@@ -25,7 +25,7 @@ You can use our [VS Code extension](editor-support.md) or manually specify the J
 
 | Option                           | Values                                                                                                 | Description                                                                                                                                                                                                                                                                                                                                                                                           |
 | -------------------------------- | ------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `buildMode`                      | `"default"`, `"library"` (default: `"library"`)                                                        | Use `buildMode: "library"` to build [publishable library packages](publishing-modules.md).                                                                                                                                                                                                                                                                                                            |
+| `buildMode`                      | `"default"`, `"library"` (default: `"default"`)                                                        | Use `buildMode: "library"` to build [publishable library packages](publishing-modules.md).                                                                                                                                                                                                                                                                                                            |
 | `extension`                      | File extension (default: `".lua"`)                                                                     | Extension of emitted lua files.                                                                                                                                                                                                                                                                                                                                                                       |
 | `luaTarget`                      | `"JIT"`, `"5.4"`, `"5.3"`, `"5.2"`, `"5.1"`, `"universal"`, `"5.0"`, `"Luau"` (default: `"universal"`) | Specifies the Lua version you want to generate code for. Choosing `universal` makes TypeScriptToLua generate code compatible with all supported Lua targets, except for Lua 5.0, which features an unique syntax not compatible with that of the other targets.                                                                                                                                       |
 | `noImplicitGlobalVariables`      | `true`, `false` (default: `false`)                                                                     | If true, always makes root level function and variable declarations local, even if not in a module (would be global in TypeScript).                                                                                                                                                                                                                                                                   |