Add missing table of content link for TFLM hello world ESP32 example.

PiperOrigin-RevId: 293738498
Change-Id: I1839ce6234d5c68b41f5e47cb056c6472c259e4f
diff --git a/tensorflow/lite/micro/examples/hello_world/README.md b/tensorflow/lite/micro/examples/hello_world/README.md
index 4a18409..3f3fef6 100644
--- a/tensorflow/lite/micro/examples/hello_world/README.md
+++ b/tensorflow/lite/micro/examples/hello_world/README.md
@@ -16,6 +16,7 @@
 
 -   [Understand the model](#understand-the-model)
 -   [Deploy to Arduino](#deploy-to-arduino)
+-   [Deploy to ESP32](#deploy-to-esp32)
 -   [Deploy to SparkFun Edge](#deploy-to-sparkfun-edge)
 -   [Deploy to STM32F746](#deploy-to-STM32F746)
 -   [Run the tests on a development machine](#run-the-tests-on-a-development-machine)