_content/doc/tutorial: fix fuzz.md final steps

main.go modified to import unicode/utf8 and errors packages, discard
returned error. Steps added to import packages and make changes in final steps.

Fixes golang/go#50628

Change-Id: I5dd5fb66256d56eb81bdbb16ba2d5a3fc1ee5dd4
Reviewed-on: https://go-review.googlesource.com/c/website/+/378477
Trust: Julie Qiu <julieqiu@google.com>
Trust: DO NOT USE <katiehockman@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
Reviewed-by: DO NOT USE <katiehockman@google.com>

1 files changed, 33 insertions, 4 deletions

diff --git a/_content/doc/tutorial/fuzz.md b/_content/doc/tutorial/fuzz.md
index 40575f90..0f96ce52 100644
--- a/_content/doc/tutorial/fuzz.md
+++ b/_content/doc/tutorial/fuzz.md
@@ -611,7 +611,32 @@ UTF-8.
    }
    ```
 
-2. Modify the reverse_test.go file to check for errors and skip the test if
+1. Since the Reverse function now returns an error, modify the `main` function to
+   discard the extra error value. Replace the existing `main` function with the
+   following.
+
+   ```
+   func main() {
+    input := "The quick brown fox jumped over the lazy dog"
+    rev, _ := Reverse(input)
+    doubleRev, _ := Reverse(rev)
+    fmt.Printf("original: %q\n", input)
+    fmt.Printf("reversed: %q\n", rev)
+    fmt.Printf("reversed again: %q\n", doubleRev)
+    }
+    ```
+1. Don't forget to import the new errors package. The first lines of main.go
+   should look like the following.
+
+   ```
+   import (
+       "fmt"
+       "errors"
+       "unicode/utf8"
+   )
+   ```
+
+1. Modify the reverse_test.go file to check for errors and skip the test if
    errors are generated by returning.
 
    ```
@@ -725,12 +750,16 @@ further reading.
 ```
 package main
 
-import "fmt"
+import (
+    "fmt"
+    "errors"
+    "unicode/utf8"
+)
 
 func main() {
     input := "The quick brown fox jumped over the lazy dog"
-    rev := Reverse(input)
-    doubleRev := Reverse(rev)
+    rev, _ := Reverse(input)
+    doubleRev, _ := Reverse(rev)
     fmt.Printf("original: %q\n", input)
     fmt.Printf("reversed: %q\n", rev)
     fmt.Printf("reversed again: %q\n", doubleRev)