Merge pull request #172 from zouyx/master

修改拼写错误

eBook/08.2.md

@@ -46,7 +46,7 @@ func main() {
 	map1["Washington"] = 25
 	value, isPresent = map1["Beijing"]
 	if isPresent {
-		fmt.Printf("The value of \"Beijin\" in map1 is: %d\n", value)
+		fmt.Printf("The value of \"Beijing\" in map1 is: %d\n", value)
 	} else {
 		fmt.Printf("map1 does not contain Beijing")
 	}