Fix some doc details (#2317)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

* **Documentation**
  * Updated minimum Byte Buddy requirement to 1.9.7+.
  * Clarified mock maker configuration options and noted support for features like Serializable mocking.
  * Added release notes about optional class-loading support in OSGi and similar environments (ContextClassLoader usage).
  * Cleaned up release notes: reordered one entry and fixed formatting/typo in another.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: Vampire

docs/extensions.adoc

@@ -1116,7 +1116,7 @@ The following mock makers are built-in, and are selected in this order:
 
 * `java-proxy`: Uses the `java.lang.reflect.Proxy` API to create mocks of interfaces.
 * `byte-buddy`: Uses https://bytebuddy.net/[Byte Buddy] to create mock objects.
-** Requires `net.bytebuddy:byte-buddy` 1.9+ on the class path.
+** Requires `net.bytebuddy:byte-buddy` 1.9.7+ on the class path.
 * `cglib`: Deprecated: Uses https://github.com/cglib/cglib[CGLIB] to create mock objects.
 ** Requires `cglib:cglib-nodep` 3.2.0+ on the class path.
 * `mockito`: Uses https://site.mockito.org/[Mockito] to create mock objects.

docs/release_notes.adoc

@@ -151,8 +151,8 @@ Thanks to all the contributors to this release: Andreas Turban, Björn Kautler,
 * Add new <<extensions.adoc#default-value-provider,`IDefaultValueProviderExtension`>> extension point to add support for special classes in the Stub's default `EmptyOrDummyResponse` spockPull:1994[]
 * Add support for Groovy-4-style range expressions spockIssue:1956[]
 * Add `IStatelessAnnotationDrivenExtension` to allow a single extension instance to be reused across all specifications spockPull:2055[]
-* Add new well-known versions to `Jvm` helper to support versions up to `29` spockPull:2057[]
 ** Built-in extensions have been updated to use this new interface where applicable
+* Add new well-known versions to `Jvm` helper to support versions up to `29` spockPull:2057[]
 * Add best-effort error reporting for interactions on final methods when using the `byte-buddy` mock maker spockIssue:2039[]
 * Add support for `@FailsWith` to assert an exception message spockIssue:2039[]
 * Add support for accessing the `IStore` via `ISpecificationContext` spockPull:2064[]
@@ -202,7 +202,7 @@ Thanks to all the contributors to this release: Björn Kautler,
 * Improve Spock's documentation by automatically linking source snippets in the docs to the code spockPull:1904[]
 * Improve `@Retry` extension parallel-safeness spockPull:1701[]
 * Improve `@RepeatUntilFailure` by allowing multiple annotations in the same specification spockPull:1912[]
-* [.line-through]#Improve collection matchers by supporting them in nested in complex assertions spockPull:1921[]#
+* Improve collection matchers by supporting them in nested complex assertions spockPull:1921[]
 * Improve stacktrace filtering by also handling suppressed exceptions spockPull:1923[]
 * Fix possible deadlock when blocking in mock response generators spockPull:1910[]
 ** Fix fallout of spockPull:1885[] introduced in M2