Simplify release notes format for retry parameters.

Converted multi-line entries in release notes to single-line with quotes. This improves readability and maintains consistency across the document. Reduced redundancy in formatting for a cleaner output.

releasenotes/notes/add-configurable-retry-parameters-fe5068cf1395887d.yaml

@@ -1,15 +1,8 @@
 ---
-prelude: >
-  This release introduces configurable retry parameters with the
-  DictConfig class and adds comprehensive unit tests for default
-  configurations.
+prelude: "This release introduces configurable retry parameters with the DictConfig class and adds comprehensive unit tests for default configurations."
 features:
-  - Added `DictConfig` class to manage default retry parameters
-  - in a singleton dictionary. (Commit 622bea5)
+  - "Added `DictConfig` class to manage default retry parameters in a singleton dictionary. (Commit 622bea5)"
 improvements:
-  - Refactored the initialization method by removing redundant
-  - attribute checks and adding a new `get` method for better
-  - configuration access. (Commit 25efec0)
+  - "Refactored the initialization method by removing redundant attribute checks and adding a new `get` method for better configuration access. (Commit 25efec0)"
 issues:
-  - Included a new test class `TestRetryDefaults` to verify
-  - `dict_config` functionalities within tenacity. (Commit 58b9993)
+  - "Included a new test class `TestRetryDefaults` to verify `dict_config` functionalities within tenacity. (Commit 58b9993)"