Tiny documentation edits [ci skip]

actionmailer/lib/action_mailer/base.rb

@@ -155,7 +155,7 @@ module ActionMailer
   # Note that <tt>deliver_later</tt> will execute your method from the background job.
   #
   # You never instantiate your mailer class. Rather, you just call the method you defined on the class itself.
-  # All instance method are expected to return a message object to be sent.
+  # All instance methods are expected to return a message object to be sent.
   #
   # = Multipart Emails
   #

actionview/lib/action_view/helpers/cache_helper.rb

@@ -39,7 +39,7 @@ module CacheHelper
       # This will include both records as part of the cache key and updating either of them will
       # expire the cache.
       #
-      # ==== Template digest
+      # ==== \Template digest
       #
       # The template digest that's added to the cache key is computed by taking an md5 of the
       # contents of the entire template file. This ensures that your caches will automatically
@@ -75,7 +75,7 @@ module CacheHelper
       #   render(topics)         => render("topics/topic")
       #   render(message.topics) => render("topics/topic")
       #
-      # It's not possible to derive all render calls like that, though. 
+      # It's not possible to derive all render calls like that, though.
       # Here are a few examples of things that can't be derived:
       #
       #   render group_of_attachments
@@ -98,14 +98,14 @@ module CacheHelper
       #   <%# Template Dependency: todolists/todolist %>
       #   <%= render_sortable_todolists @project.todolists %>
       #
-      # The pattern used to match these is /# Template Dependency: ([^ ]+)/, 
+      # The pattern used to match these is <tt>/# Template Dependency: (\S+)/</tt>,
       # so it's important that you type it out just so.
       # You can only declare one template dependency per line.
       #
       # === External dependencies
       #
-      # If you use a helper method, for example, inside a cached block and 
-      # you then update that helper, you'll have to bump the cache as well. 
+      # If you use a helper method, for example, inside a cached block and
+      # you then update that helper, you'll have to bump the cache as well.
       # It doesn't really matter how you do it, but the md5 of the template file
       # must change. One recommendation is to simply be explicit in a comment, like:
       #
@@ -130,8 +130,8 @@ module CacheHelper
       # The collection can then automatically use any cached renders for that
       # template by reading them at once instead of one by one.
       #
-      # See ActionView::Template::Handlers::ERB.resource_cache_call_pattern for 
-      # more information on what cache calls make a template eligible for this 
+      # See ActionView::Template::Handlers::ERB.resource_cache_call_pattern for
+      # more information on what cache calls make a template eligible for this
       # collection caching.
       #
       # The automatic cache multi read can be turned off like so: