Revert "Update documentation"

This reverts commit 272b36a.

README.md

@@ -447,12 +447,7 @@ For more details see
 
 If you want to use live code reloading, or you have enough JavaScript that on-demand compilation is too slow, you'll need to run `./bin/shakapacker-dev-server`. This process will watch for changes in the relevant files, defined by `shakapacker.yml` configuration settings for `source_path`, `source_entry_path`, and `additional_paths`, and it will then automatically reload the browser to match. This feature is also known as [Hot Module Replacement](https://webpack.js.org/concepts/hot-module-replacement/).
 
-**Note:**
-In digest strategy,
-if you set a custom asset host either through
-`Rails.application.config.asset_host` or `SHAKAPACKER_ASSET_HOST` environment variable,
-a hash gets added to the asset path.
-This feature causes recompilation of assets by changing the asset host.
+**Note:** If you want to enforce recompilation on asset host change (for example, through `SHAKAPACKER_ASSET_HOST` environment variable), in addition to using digest strategy, you should set `compiler_strategy_asset_host_sensitive: true` in `config/shakapacker.yml`.
 
 #### Common Development Commands