readme : add link web chat PR

Author: ggerganov

README.md

@@ -11,6 +11,7 @@ Inference of [LLaMA](https://arxiv.org/abs/2302.13971) model in pure C/C++
 
 **Hot topics:**
 
+- Simple web chat example: https://github.com/ggerganov/llama.cpp/pull/1998
 - k-quants now support super-block size of 64: https://github.com/ggerganov/llama.cpp/pull/2001
 - New roadmap: https://github.com/users/ggerganov/projects/7
 - Azure CI brainstorming: https://github.com/ggerganov/llama.cpp/discussions/1985