Tiny documentation fixes [ci skip]

actionview/lib/action_view/helpers/form_helper.rb

@@ -482,7 +482,7 @@ module ActionView
       #       Admin?  : <%= permission_fields.check_box :admin %>
       #     <% end %>
       #
-      #     <%= f.submit %>
+      #     <%= person_form.submit %>
       #   <% end %>
       #
       # In this case, the checkbox field will be represented by an HTML +input+

activesupport/lib/active_support/callbacks.rb

@@ -71,7 +71,7 @@ module ActiveSupport
     # order.
     #
     # If the callback chain was halted, returns +false+. Otherwise returns the
-    # result of the block, nil if no callbacks have been set, or +true+ 
+    # result of the block, +nil+ if no callbacks have been set, or +true+
     # if callbacks have been set but no block is given.
     #
     #   run_callbacks :save do

guides/source/initialization.md

@@ -98,9 +98,9 @@ configure the load path for your Gemfile's dependencies.
 
 A standard Rails application depends on several gems, specifically:
 
-* abstract
 * actionmailer
 * actionpack
+* actionview
 * activemodel
 * activerecord
 * activesupport
@@ -119,7 +119,7 @@ A standard Rails application depends on several gems, specifically:
 * rails
 * railties
 * rake
-* sqlite3-ruby
+* sqlite3
 * thor
 * treetop
 * tzinfo
@@ -703,4 +703,4 @@ the last piece of our journey in the Rails initialization process.
 This high level overview will help you understand when your code is
 executed and how, and overall become a better Rails developer. If you
 still want to know more, the Rails source code itself is probably the
-best place to go next.
+best place to go next.