CHANGELOG: minor touch-up

* Remove self-mentions in RC1 changelog. As of the 4.0.0 series, I stopped doing those.
* Mention for the 4.0.0 release that all changes from the beta and the RC are included (not so relevant in the changelog file, but relevant in the release announcement, so updating it here too for synchronicity).

Author: jrfnl

CHANGELOG-4.x.md

@@ -10,7 +10,7 @@ Upgrade guides for both [ruleset maintainers/end-users][wiki-upgrade-4.0-end-use
 
 You are strongly encouraged to read the upgrade guide applicable to your situation before upgrading.
 
-This release includes all improvements and bugfixes from PHP_CodeSniffer [3.13.3] and  [3.13.4].
+This release includes all improvements and bugfixes from PHP_CodeSniffer [4.0.0-beta1], [4.0.0-RC1], [3.13.3] and [3.13.4].
 
 ### Changed
 - Tokenizer/PHP: fully qualified `exit`/`die`/`true`/`false`/`null` will be tokenized as the keyword token and the token `'content'` will include the leading backslash. [#1201]
@@ -31,8 +31,9 @@ This release includes all improvements and bugfixes from PHP_CodeSniffer [3.13.3
     - If you contribute to PHP_CodeSniffer, you will need to update your local git clone.
     - If you develop against PHP_CodeSniffer and run your tests against dev branches of PHPCS, you will need to update your workflows.
 
-[3.13.3]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/4.x/CHANGELOG-3.x.md#3133---2025-09-04
-[3.13.4]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/4.x/CHANGELOG-3.x.md#3134---2025-09-05
+[3.13.3]:    https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3133---2025-09-04
+[3.13.4]:    https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3134---2025-09-05
+[4.0.0-RC1]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-4.x.md#400rc1---2025-06-18
 
 [#1082]: https://github.com/PHPCSStandards/PHP_CodeSniffer/issues/1082
 [#1172]: https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/1172
@@ -45,11 +46,10 @@ This release includes all improvements and bugfixes from PHP_CodeSniffer [3.13.3
 
 ## [4.0.0RC1] - 2025-06-18
 
-This release includes all improvements and bugfixes from PHP_CodeSniffer [3.13.1] and [3.13.2].
+This release includes all improvements and bugfixes from PHP_CodeSniffer [4.0.0-beta1], [3.13.1] and [3.13.2].
 
 ### Changed
 - The error code `Squiz.Functions.FunctionDeclarationArgumentSpacing.SpacingAfterVisbility` has been changed to `Squiz.Functions.FunctionDeclarationArgumentSpacing.SpacingAfterVisibility`. [#1136]
-    - Thanks to [Juliette Reinders Folmer][@jrfnl] for the patch.
 - The following sniff(s) have received efficiency improvements:
     - Generic.ControlStructures.InlineControlStructure
     - Thanks to [Rodrigo Primo][@rodrigoprimo] for the patch.
@@ -58,13 +58,13 @@ This release includes all improvements and bugfixes from PHP_CodeSniffer [3.13.1
 - Fixed bug [#3889][sq-3889] : A selective `phpcs:enable` could sometimes override a later selective `phpcs:ignore`.
     - Thanks to [Brad Jorsch][@anomiex] for the patch
 - Fixed bug [#1128] : missing 'parenthesis_owner' index for T_FUNCTION token on PHP < 7.4 when function is named "fn".
-    - Thanks to [Juliette Reinders Folmer][@jrfnl] for the patch.
 
 ### Other
 - The GPG signature for the PHAR files has been rotated. The new fingerprint is: D91D86963AF3A29B6520462297B02DD8E5071466.
 
-[3.13.1]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3131---2025-06-13
-[3.13.2]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3132---2025-06-18
+[3.13.1]:      https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3131---2025-06-13
+[3.13.2]:      https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-3.x.md#3132---2025-06-18
+[4.0.0-beta1]: https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/CHANGELOG-4.x.md#400beta1---2025-05-11
 
 [sq-3889]: https://github.com/squizlabs/PHP_CodeSniffer/issues/3889
 [#1128]:   https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/1128