Update README.md

Author: zeitlings

README.md

@@ -1,4 +1,5 @@
-<img src="assets/images/header.png" width="800px">
+
+<p align="center"><img src="assets/images/header.png" width="600px"></p>
 
 __ChatGPT__, __Claude__, __Perplexity__, and __Gemini__ integrations for chat, information retrieval, and text processing tasks, such as paraphrasing, simplifying, or summarizing. 
 With support for third party __proxies__ and __local LLMs__.