[v2] docs(app-dev): fix inconsistent indentation (#4730)

* [v2] docs(app-dev): fix inconsistent indentation

- several places had mixed indentation (tabs _and_ spaces)
- some lines had incorrect indentation, partially due to the above

* add changelog entry per PR template

---------

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>

website/docs/guides/application-development.mdx

@@ -59,7 +59,6 @@ func main() {
 		log.Fatal(err)
 	}
 }
-
 ```
 
 More information on application lifecycle hooks can be found [here](../howdoesitwork.mdx#application-lifecycle-callbacks).
@@ -91,7 +90,7 @@ func (a *App) shutdown(ctx context.Context) {
 }
 
 func (a *App) Greet(name string) string {
-    return fmt.Sprintf("Hello %s!", name)
+	return fmt.Sprintf("Hello %s!", name)
 }
 ```
 
@@ -108,15 +107,14 @@ func main() {
 		Height:            600,
 		OnStartup:  app.startup,
 		OnShutdown: app.shutdown,
-        Bind: []interface{}{
-            app,
-        },
+		Bind: []interface{}{
+			app,
+		},
 	})
 	if err != nil {
 		log.Fatal(err)
 	}
 }
-
 ```
 
 This will bind all public methods in our `App` struct (it will never bind the startup and shutdown methods).
@@ -142,10 +140,10 @@ func main() {
 			otherStruct.SetContext(ctx)
 		},
 		OnShutdown: app.shutdown,
-        Bind: []interface{}{
-            app,
+		Bind: []interface{}{
+			app,
 			otherStruct
-        },
+		},
 	})
 	if err != nil {
 		log.Fatal(err)
@@ -196,18 +194,17 @@ func main() {
 		Height:            600,
 		OnStartup:  app.startup,
 		OnShutdown: app.shutdown,
-    Bind: []interface{}{
-        app,
-    },
-    EnumBind: []interface{}{
-        AllWeekdays,
-     },
+		Bind: []interface{}{
+			app,
+		},
+		EnumBind: []interface{}{
+			AllWeekdays,
+		},
 	})
 	if err != nil {
 		log.Fatal(err)
 	}
 }
-
 ```
 
 This will add missing enums to your `model.ts` file.
@@ -232,15 +229,14 @@ func main() {
 		OnStartup:  app.startup,
 		OnShutdown: app.shutdown,
 		Menu:       app.menu(),
-        Bind: []interface{}{
-            app,
-        },
+		Bind: []interface{}{
+			app,
+		},
 	})
 	if err != nil {
 		log.Fatal(err)
 	}
 }
-
 ```
 
 ## Assets

website/src/pages/changelog.mdx

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed indentation in Application Development guide by @agilgur5 in [#4730](https://github.com/wailsapp/wails/pull/4730)
 - Updated Application Development guide to show imports in the `app.go` snippets by @agilgur5 in [#4731](https://github.com/wailsapp/wails/pull/4731)
 - Fixed link to CoC in Community Guide when there was a trailing slash by @agilgur5 in [#4732](https://github.com/wailsapp/wails/pull/4732)
 - Fixed indentation in "How does it work?" page by @agilgur5 in [#4733](https://github.com/wailsapp/wails/pull/4733)