code review 204068: testing: Fix comment typo

src/pkg/testing/testing.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // The testing package provides support for automated testing of Go packages.
 // It is intended to be used in concert with the ``gotest'' utility, which automates
 // execution of any function of the form
 //     func TestXxx(*testing.T)
-// where Xxx can by any alphanumeric string (but the first letter must not be in
+// where Xxx can be any alphanumeric string (but the first letter must not be in
 // [a-z]) and serves to identify the test routine.
 // These TestXxx routines should be declared within the package they are testing.
 //
 // Functions of the form
 //     func BenchmarkXxx(*testing.B)
 // are considered benchmarks, and are executed by gotest when the -benchmarks
 // flag is provided.
 //
 // A sample benchmark function looks like this:
 //     func BenchmarkHello(b *testing.B) {
@@ skipping 145 matching lines @@
                         println("--- PASS:", tests[i].Name)
                         print(t.errors)
                 }
         }
         if !ok {
                 println("FAIL")
                 os.Exit(1)
         }
         println("PASS")
 }