update: readme, add website https://pfind.ict.ac.cn

Author: NorthblueM

README.md

@@ -10,15 +10,15 @@ A search engine for the identification of cross-linked protein complexes or prot
 
 * If you need to extend the validity of a license for a previous version, please contact us at support@pfind.org. However, we recommend upgrading to pLink3, as maintenance for pLink2 will be discontinued in the future.
 
-* Technical support or bug reporting: https://github.com/pFindStudio/pLink3/issues
+* **Technical support or bug reporting**: https://github.com/pFindStudio/pLink3/issues
 	* We encourage to use the GitHub issues platform for communication, as it can help more people efficiently. 
 	* Of course, you are also welcome to reach out via email.
 
-* License self-service: http://i.pfind.org (Alternative: http://i.pfind.net )
+* **License self-service**: http://i.pfind.net (Alternative: http://i.pfind.org )
 
-* Contact: support@pfind.org. (Alternative: plink@ict.ac.cn )
+* **Contact**: support@pfind.org. (Alternative: plink@ict.ac.cn )
 
-* Website: http://pfind.org (Alternative: http://pfind.net )
+* **Website**: http://pfind.net (Alternative: https://pfind.ict.ac.cn , http://pfind.org )
 
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