Prepare release notes for rc1100 (#1099)

RELEASE_NOTES.md

@@ -2,7 +2,7 @@
 
 ## Summary
 
-<!-- Here goes a general summary of what this release is about -->
+This release focus on improving the config management, but also introduces other minor improvements and fixes an important bug.
 
 ## Upgrading
 
@@ -15,14 +15,14 @@
    actor = ConfigManagingActor(config_files=["config.toml"])
    ```
 
-* The `MovingWindow` now take all arguments as keyword-only to avoid mistakes.
-* The `frequenz-quantities` dependency was bumped to `1.0.0rc3`.
-* The `ComponentMetricsRequest` now produces a channel name without the `start_date` if the `start_date` is `None`. If you are somehow relying on the old behavior, please update your code.
+- The `MovingWindow` now take all arguments as keyword-only to avoid mistakes.
+- The `frequenz-quantities` dependency was bumped to `1.0.0rc3`.
+- The `ComponentMetricsRequest` now produces a channel name without the `start_date` if the `start_date` is `None`. If you are somehow relying on the old behavior, please update your code.
 
 ## New Features
 
 - The `ConfigManagingActor` can now take multiple configuration files as input, allowing to override default configurations with custom configurations.
-* A new `frequenz.sdk.config.load_config()` function is available to load configurations using `marshmallow_dataclass`es with correct type hints.
+- A new `frequenz.sdk.config.load_config()` function is available to load configurations using `marshmallow_dataclass`es with correct type hints.
 - Implement and standardize logging configuration with the following changes:
    * Add `LoggerConfig` and `LoggingConfig` to standardize logging configuration.
    * Create `LoggingConfigUpdater` to handle runtime config updates.