Fix broken CHANGELOG markup [ci skip]

And remove trailing spaces.

actionpack/CHANGELOG.md

@@ -3,9 +3,9 @@
     There is no controller instance when using a redirect route or a
     mounted rack application so pass the request object as the context
     when resolving dynamic CSP sources in this scenario.
-    
+
     Fixes #34200.
-    
+
     *Andrew White*
 
 *   Apply mapping to symbols returned from dynamic CSP sources
@@ -14,7 +14,7 @@
     would be converted to a string implicity, e.g:
 
         policy.default_src -> { :self }
-  
+
     would generate the header:
 
         Content-Security-Policy: default-src self

actionview/CHANGELOG.md

@@ -11,7 +11,7 @@
     *Eileen M. Uchitelle*, *Aaron Patterson*
 
 *   Respect the `only_path` option passed to `url_for` when the options are passed in as an array
-    
+
     Fixes #33237.
 
     *Joel Ambass*

activerecord/CHANGELOG.md

@@ -1,4 +1,4 @@
-Adds support for multiple databases to `rails db:schema:cache:dump` and `rails db:schema:cache:clear`.
+*   Adds support for multiple databases to `rails db:schema:cache:dump` and `rails db:schema:cache:clear`.
 
     *Gannon McGibbon*