cleanup CHANGELOGs. [ci skip]

actionpack/CHANGELOG.md

@@ -9,11 +9,11 @@
 
     *Chris Sinjakli*
 
-*   Fixed usage of optional scopes in URL helpers.
+*   Fixed usage of optional scopes in url helpers.
 
     *Alex Robbin*
 
-*   Fixed handling of positional url helper arguments when `format: false`. 
+*   Fixed handling of positional url helper arguments when `format: false`.
 
     Fixes #17819.
 

activerecord/CHANGELOG.md

 *   Fixes bug with 'ActiveRecord::Type::Numeric' that causes negative values to
     be marked as having changed when set to the same negative value.
 
-    Closes GH#18161
+    Closes #18161.
 
     *Daniel Fox*
 
@@ -20,7 +20,7 @@
 
     *Yves Senn*
 
-*   Fix undesirable RangeError by Type::Integer. Add Type::UnsignedInteger.
+*   Fix undesirable RangeError by `Type::Integer`. Add `Type::UnsignedInteger`.
 
     *Ryuta Kamizono*
 

activesupport/CHANGELOG.md

-*   Added support for error dispatcher classes in ActiveSupport::Rescuable. Now it acts closer to Ruby's rescue.
+*   Added support for error dispatcher classes in `ActiveSupport::Rescuable`. Now it acts closer to Ruby's rescue.
 
         class BaseController < ApplicationController
           module ErrorDispatcher