html/template, net/http, websocket: fix import paths in comments

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/5411048

src/pkg/html/template/doc.go

@@ -29,7 +29,7 @@ trusted, while Execute's data parameter is not. More details are provided below.
 
 Example
 
-    import "template"
+    import "text/template"
     ...
     t, err := (&template.Set{}).Parse(`{{define "T"}}Hello, {{.}}!{{end}}`)
     err = t.Execute(out, "T", "<script>alert('you have been pwned')</script>")

src/pkg/net/http/server.go

@@ -1013,8 +1013,8 @@ func (srv *Server) Serve(l net.Listener) error {
 //	package main
 //
 //	import (
-//		"http"
 //		"io"
+//		"net/http"
 //		"log"
 //	)
 //
@@ -1044,8 +1044,8 @@ func ListenAndServe(addr string, handler Handler) error {
 // A trivial example server is:
 //
 //	import (
-//		"http"
 //		"log"
+//		"net/http"
 //	)
 //
 //	func handler(w http.ResponseWriter, req *http.Request) {

src/pkg/websocket/client.go

@@ -72,8 +72,8 @@ A trivial example client:
 	package main
 
 	import (
-		"http"
 		"log"
+		"net/http"
 		"strings"
 		"websocket"
 	)

src/pkg/websocket/server.go

@@ -60,8 +60,8 @@ A trivial example server:
 	package main
 
 	import (
-		"http"
 		"io"
+		"net/http"
 		"websocket"
 	)