update package reference

example/mapreduce/countfunc/countfunc.go

@@ -14,7 +14,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"zero/core/mr"
+	"github.com/tal-tech/go-zero/core/mr"
 
 	"github.com/google/gops/agent"
 )

example/mapreduce/finishvoid/finishvoid.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"time"
 
-	"zero/core/mr"
-	"zero/core/timex"
+	"github.com/tal-tech/go-zero/core/mr"
+	"github.com/tal-tech/go-zero/core/timex"
 )
 
 func main() {

example/mapreduce/flatmap/flatmap.go

@@ -3,7 +3,7 @@ package main
 import (
 	"fmt"
 
-	"zero/core/mr"
+	"github.com/tal-tech/go-zero/core/mr"
 )
 
 var (

example/mapreduce/goroutineleak/leak.go

@@ -8,10 +8,10 @@ import (
 	"runtime/pprof"
 	"time"
 
-	"zero/core/lang"
-	"zero/core/logx"
-	"zero/core/mr"
-	"zero/core/proc"
+	"github.com/tal-tech/go-zero/core/lang"
+	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/mr"
+	"github.com/tal-tech/go-zero/core/proc"
 )
 
 func dumpGoroutines() {

example/mapreduce/irregular/irregular.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"time"
 
-	"zero/core/mr"
+	"github.com/tal-tech/go-zero/core/mr"
 )
 
 func main() {