readme: correct indent in a hallo-world example

README.md

@@ -57,32 +57,32 @@ Compared to other Dear ImGui golang bindings, giu has the following features:
 package main
 
 import (
- "fmt"
+        "fmt"
 
- g "github.com/AllenDang/giu"
+        g "github.com/AllenDang/giu"
 )
 
 func onClickMe() {
- fmt.Println("Hello world!")
+        fmt.Println("Hello world!")
 }
 
 func onImSoCute() {
- fmt.Println("Im sooooooo cute!!")
+        fmt.Println("Im sooooooo cute!!")
 }
 
 func loop() {
- g.SingleWindow().Layout(
-  g.Label("Hello world from giu"),
-  g.Row(
-   g.Button("Click Me").OnClick(onClickMe),
-   g.Button("I'm so cute").OnClick(onImSoCute),
-  ),
- )
+        g.SingleWindow().Layout(
+                g.Label("Hello world from giu"),
+                g.Row(
+                        g.Button("Click Me").OnClick(onClickMe),
+                        g.Button("I'm so cute").OnClick(onImSoCute),
+                ),
+        )
 }
 
 func main() {
- wnd := g.NewMasterWindow("Hello world", 400, 200, g.MasterWindowFlagsNotResizable)
- wnd.Run(loop)
+        wnd := g.NewMasterWindow("Hello world", 400, 200, g.MasterWindowFlagsNotResizable)
+        wnd.Run(loop)
 }
 ```