codelab/wiki: switch edit/view, as they were backwards

Fixes #757.

R=rsc
CC=golang-dev
https://golang.org/cl/1064041

doc/codelab/wiki/final-template.go

@@ -34,13 +34,13 @@ func editHandler(c *http.Conn, r *http.Request) {
 	if err != nil {
 		p = &page{title: title}
 	}
-	renderTemplate(c, "view", p)
+	renderTemplate(c, "edit", p)
 }
 
 func viewHandler(c *http.Conn, r *http.Request) {
 	title := r.URL.Path[lenPath:]
 	p, _ := loadPage(title)
-	renderTemplate(c, "edit", p)
+	renderTemplate(c, "view", p)
 }
 
 func saveHandler(c *http.Conn, r *http.Request) {

doc/codelab/wiki/index.html

@@ -544,7 +544,7 @@ to its own function:
 func viewHandler(c *http.Conn, r *http.Request) {
 	title := r.URL.Path[lenPath:]
 	p, _ := loadPage(title)
-	renderTemplate(c, "edit", p)
+	renderTemplate(c, "view", p)
 }
 
 func editHandler(c *http.Conn, r *http.Request) {
@@ -553,7 +553,7 @@ func editHandler(c *http.Conn, r *http.Request) {
 	if err != nil {
 		p = &page{title: title}
 	}
-	renderTemplate(c, "view", p)
+	renderTemplate(c, "edit", p)
 }
 
 func renderTemplate(c *http.Conn, tmpl string, p *page) {

doc/codelab/wiki/wiki.html

@@ -58,13 +58,15 @@ package main
 import (
 	"fmt"
 	"io/ioutil"
+	"os"
 )
 </pre>
 
 <p>
-Both <code>fmt</code> and <code>ioutil</code> are built-in packages that 
-we'll be using. Later, as we implement additional functionality, we will add 
-more packages to this <code>import</code> declaration.
+We import the <code>fmt</code>, <code>ioutil</code> and <code>os</code>
+packages from the Go standard library. Later, as we implement additional
+functionality, we will add more packages to this <code>import</code>
+declaration.
 </p>
 
 <h2>Data Structures</h2>
@@ -161,7 +163,7 @@ function to return <code>*page</code> and <code>os.Error</code>.
 
 <p>
 Callers of this function can now check the second parameter; if it is
-<code>nil</code> then it has succesfully loaded a page. If not, it will be an
+<code>nil</code> then it has successfully loaded a page. If not, it will be an
 <code>os.Error</code> that can be handled by the caller (see the <a
 href="http://golang.org/pkg/os/#Error">os package documentation</a> for 
 details).
@@ -198,7 +200,7 @@ This is a sample page.
 <p>
 (The <code>8g</code> and <code>8l</code> commands are applicable to
 <code>GOARCH=386</code>. If you're on an <code>amd64</code> system,
-subtitute 6's for the 8's.)
+substitute 6's for the 8's.)
 </p>
 
 <p>
@@ -268,6 +270,7 @@ import (
 	"fmt"
 	<b>"http"</b>
 	"io/ioutil"
+	"os"
 )
 </pre>
 
@@ -389,7 +392,7 @@ import (
 </pre>
 
 <p>
-Let's create a template file containg the HTML form. 
+Let's create a template file containing the HTML form. 
 Open a new file named <code>edit.html</code>, and add the following lines:
 </p>