copy edits [ci skip]

2 files changed, 4 insertions, 7 deletions

diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb
index f039c23675..04c0fbfe70 100644
--- a/activerecord/lib/active_record/errors.rb
+++ b/activerecord/lib/active_record/errors.rb
@@ -201,12 +201,9 @@ module ActiveRecord
   #   relation = Task.all
   #   relation.loaded? # => true
   #
-  #   # where! will try to mutate the relation, but this will fails because it's loaded
-  #   relation.where!(title: 'TODO')
-  #   # => ActiveRecord::ImmutableRelation
-  #
-  #   relation.limit!(5)
-  #   # => ActiveRecord::ImmutableRelation
+  #   # Methods which try to mutate a loaded relation fail.
+  #   relation.where!(title: 'TODO')  # => ActiveRecord::ImmutableRelation
+  #   relation.limit!(5)              # => ActiveRecord::ImmutableRelation
   class ImmutableRelation < ActiveRecordError
   end
 
diff --git a/guides/source/contributing_to_ruby_on_rails.md b/guides/source/contributing_to_ruby_on_rails.md
index 6d63697047..3791467584 100644
--- a/guides/source/contributing_to_ruby_on_rails.md
+++ b/guides/source/contributing_to_ruby_on_rails.md
@@ -205,10 +205,10 @@ TIP: Changes that are cosmetic in nature and do not add anything substantial to
 
 Rails follows a simple set of coding style conventions.
 
-* Use Ruby >= 1.9 syntax. Prefer `{ a: :b }` over `{ :a => :b }`.
 * Two spaces, no tabs (for indentation).
 * No trailing whitespace. Blank lines should not have any spaces.
 * Indent after private/protected.
+* Use Ruby >= 1.9 syntax for hashes. Prefer `{ a: :b }` over `{ :a => :b }`.
 * Prefer `&&`/`||` over `and`/`or`.
 * Prefer class << self over self.method for class methods.
 * Use `MyClass.my_method(my_arg)` not `my_method( my_arg )` or `my_method my_arg`.