Tiny document fixes [ci skip]

Add a missing capital letter and avoid using absolute links to the
API because they may refer to out-dated documentation on the Edge
site.

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index ec9b073c18..3729e22e64 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -300,7 +300,7 @@ module ActiveRecord
     #
     # === A word of warning
     #
-    # Don't create associations that have the same name as [instance methods](http://api.rubyonrails.org/classes/ActiveRecord/Core.html) of
+    # Don't create associations that have the same name as {instance methods}[rdoc-ref:ActiveRecord::Core] of
     # <tt>ActiveRecord::Base</tt>. Since the association adds a method with that name to
     # its model, using an association with the same name as one provided by <tt>ActiveRecord::Base</tt> will override the method inherited through <tt>ActiveRecord::Base</tt> and will break things.
     # For instance, +attributes+ and +connection+ would be bad choices for association names, because those names already exist in the list of <tt>ActiveRecord::Base</tt> instance methods.