Improve provider docs

* Rephrase link from setup-provider to csaf_provider options.
* Remove a few superfluous whitespace chars.

docs/csaf_provider.md

@@ -30,8 +30,8 @@ Following options are supported in the config file:
  - provider_metadata.mirror_on_CSAF_aggregators: Mirror on aggregators
  - remote_validator: Use a remote validator service. Not used by default.
    `{ "url" = "http://localhost:3000", "presets" = ["mandatory"], "cache" = "/var/lib/csaf/validations.db" }`
- - provider_metadata.publisher: Set the publisher. Default:  
-```toml 
+ - provider_metadata.publisher: Set the publisher. Default:
+```toml
 [provider_metadata.publisher]
 category = "vendor"
 name = "Example Company"

docs/provider-setup.md

@@ -109,9 +109,13 @@ sudo chmod g+r,o-rwx /usr/lib/csaf/config.toml
 ```
 <!-- MARKDOWN-AUTO-DOCS:END -->
 
-**This and the other settings are just examples, please adjust permissions and paths**
-**according to your webserver and security needs**
-with suitable [replacements](https://github.com/csaf-poc/csaf_distribution/blob/main/docs/csaf_provider.md)
+**This and the other settings are just examples,**
+**please adjust permissions and paths**
+**according to your webserver and security needs.**
+
+Here is a minimal example configuration,
+which you need to customize for a production setup,
+see the [options of `csaf_provider`](https://github.com/csaf-poc/csaf_distribution/blob/main/docs/csaf_provider.md).
 
 <!-- MARKDOWN-AUTO-DOCS:START (CODE:src=../docs/scripts/setupProviderForITest.sh&lines=94-99) -->
 <!-- The below code snippet is automatically added from ../docs/scripts/setupProviderForITest.sh -->