docs: point documentation links at commit-check.com

The documentation moved to its own repository and is served from the apex
domain, so the docs.commit-check.com links now resolve through a redirect.
Point them at the canonical URLs directly.

Author: shenxianpeng

README.md

@@ -186,13 +186,13 @@ Set any `CCHK_*` environment variable in your workflow step — no config file r
 
 All available environment variables follow the naming convention:
 `CCHK_` + uppercase option name with underscores instead of hyphens. See the
-[full mapping](https://docs.commit-check.com/configuration.html#environment-variables)
+[full mapping](https://commit-check.com/configuration/#environment-variables)
 in the commit-check documentation.
 
 ### Via Configuration File
 
 Add a `commit-check.toml` or `cchk.toml` to the root of your repository.
-Refer to the [configuration guide](https://docs.commit-check.com/configuration.html)
+Refer to the [configuration guide](https://commit-check.com/configuration/)
 for all available options.
 
 > [!NOTE]