Update README.md

Author: vandadnp

README.md

@@ -1,5 +1,6 @@
 # Table of Contents
 
+* [Replacing Text in TextField in Flutter](#replacing-text-in-textfield-in-flutter)
 * [Aspect Ratio in Flutter](#aspect-ratio-in-flutter)
 * [Zoom and Pan in Flutter](#zoom-and-pan-in-flutter)
 * [Resizing Images in Flutter to Fit Screen Height](#resizing-images-in-flutter-to-fit-screen-height)
@@ -70,6 +71,10 @@
 * [Extract Minimum and Maximum Values in `List<num>` in Dart](#4-lines-of-dart-code-that-include-the-spread-operator-cascade-operator-generics-extensions-private-prefix-and-getters)
 * [Functions as First Class Citizens in Dart](#functions-as-first-class-citizens-in-dart)
 
+# Replacing Text in TextField in Flutter
+
+![](images/replacing-text-in-textfield-in-flutter.jpg)
+
 # Aspect Ratio in Flutter
 
 ![](images/aspect-ratio-in-flutter.jpg)