copy edits [ci skip]

activerecord/lib/active_record/persistence.rb

@@ -197,7 +197,7 @@ def update_attributes!(attributes)
       end
     end
 
-    # Updates a single attribute of an object, without having to call save on that object.
+    # Updates a single attribute of an object, without having to explicitly call save on that object.
     #
     # * Validation is skipped.
     # * Callbacks are skipped.
@@ -209,7 +209,7 @@ def update_column(name, value)
       update_columns(name => value)
     end
 
-    # Updates the attributes from the passed-in hash, without having to call save on that object.
+    # Updates the attributes from the passed-in hash, without having to explicitly call save on that object.
     #
     # * Validation is skipped.
     # * Callbacks are skipped.

guides/source/testing.md

@@ -225,7 +225,7 @@ TIP: You can see all these rake tasks and their descriptions by running `rake --
 Running a test is as simple as invoking the file containing the test cases through Ruby:
 
 ```bash
-$ ruby -I test test/unit/post_test.rb
+$ ruby -Itest test/unit/post_test.rb
 
 Loaded suite unit/post_test
 Started
@@ -240,7 +240,7 @@ This will run all the test methods from the test case. Note that `test_helper.rb
 You can also run a particular test method from the test case by using the `-n` switch with the `test method name`.
 
 ```bash
-$ ruby -I test test/unit/post_test.rb -n test_the_truth
+$ ruby -Itest test/unit/post_test.rb -n test_the_truth
 
 Loaded suite unit/post_test
 Started