update AS/notifications and AS/testing docs [ci skip]

activesupport/lib/active_support/notifications/instrumenter.rb

@@ -13,7 +13,7 @@ def initialize(notifier)
 
       # Instrument the given block by measuring the time taken to execute it
       # and publish it. Notice that events get sent even if an error occurs
-      # in the passed-in block
+      # in the passed-in block.
       def instrument(name, payload={})
         @notifier.start(name, @id, payload)
         begin

activesupport/lib/active_support/testing/assertions.rb

@@ -31,7 +31,7 @@ module Assertions
       #
       # A lambda or a list of lambdas can be passed in and evaluated:
       #
-      #   assert_difference lambda { Article.count }, 2 do
+      #   assert_difference ->{ Article.count }, 2 do
       #     post :create, article: {...}
       #   end
       #
@@ -77,7 +77,8 @@ def assert_no_difference(expression, message = nil, &block)
         assert_difference expression, 0, message, &block
       end
 
-      # Test if an expression is blank. Passes if <tt>object.blank?</tt> is +true+.
+      # Test if an expression is blank. Passes if <tt>object.blank?</tt>
+      # is +true+.
       #
       #   assert_blank []   # => true
       #   assert_blank [[]] # => [[]] is not blank
@@ -90,7 +91,8 @@ def assert_blank(object, message=nil)
         assert object.blank?, message
       end
 
-      # Test if an expression is not blank. Passes if <tt>object.present?</tt> is +true+.
+      # Test if an expression is not blank. Passes if <tt>object.present?</tt>
+      # is +true+.
       #
       #   assert_present({ data: 'x' }) # => true
       #   assert_present({})            # => {} is blank

activesupport/lib/active_support/testing/performance.rb

@@ -70,7 +70,7 @@ def run_test(metric, mode)
       end
 
       protected
-        # overridden by each implementation
+        # overridden by each implementation.
         def run_gc; end
 
         def run_warmup
@@ -114,7 +114,7 @@ def output_filename
           end
       end
 
-      # overridden by each implementation
+      # overridden by each implementation.
       class Profiler < Performer
         def time_with_block
           before = Time.now
@@ -221,11 +221,11 @@ def benchmark
             end
           end
 
-          # overridden by each implementation
+          # overridden by each implementation.
           def profile; end
 
           protected
-            # overridden by each implementation
+            # overridden by each implementation.
             def with_gc_stats; end
         end