complete rewrite of the documentation of AS::PerThreadRegistry

* It focuses on how to use it.

* Removes some ambigueties in the original docs about whether the state is stored in the class.

* Documents it provides class-level accessors via method_missing.

* Documents that if the extended class has an initializer, it must accept no arguments.

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/runtime_registry.rb b/activerecord/lib/active_record/runtime_registry.rb
index 3f0ac68143..71b281d844 100644
--- a/activerecord/lib/active_record/runtime_registry.rb
+++ b/activerecord/lib/active_record/runtime_registry.rb
@@ -1,7 +1,7 @@
 require 'active_support/per_thread_registry'
 
 module ActiveRecord
-  # This is a registry class for storing local variables in active record. The
+  # This is a registry class for storing local variables in Active Record. The
   # class allows you to access variables that are local to the current thread.
   # These thread local variables are stored as attributes in the
   # +RuntimeRegistry+ class.