Update CHANGELOG.md

Author: cleptric

CHANGELOG.md

@@ -3,6 +3,9 @@
 ## 4.6.0
 
 The Sentry SDK team is happy to announce the immediate availability of Sentry Symfony SDK v4.6.0.
+This release contains a colorful bouquet of new features.
+
+### Features
 
 - Report exceptions to Sentry as unhandled by default [(#674)](https://github.com/getsentry/sentry-symfony/pull/674)
 
@@ -33,7 +36,7 @@ The Sentry SDK team is happy to announce the immediate availability of Sentry Sy
                 hub_id: Sentry\State\HubInterface
   ```
 
-- feat: Add before_send_transaction (#691)
+- Add `before_send_transaction` [(#691)](https://github.com/getsentry/sentry-symfony/pull/691)
 
   Similar to `before_send`, you can now apply additional logic for `transaction` events.
   You can mutate the `transaction` event before it is sent to Sentry. If your callback returns `null`,
@@ -74,6 +77,10 @@ The Sentry SDK team is happy to announce the immediate availability of Sentry Sy
 
   You may need to update your starred transactions as well as your dashboards due to this change.
 
+### Bug Fixes
+
+- Sanatize HTTP client spans [(#690)](https://github.com/getsentry/sentry-symfony/pull/690)
+
 ## 4.5.0 (2022-11-28)
 
 - Symfony version 3.4 is no longer supported