link to license.txt (#15085)

diff --git a/README.md b/README.md
index 61860e0..279ba22 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@
 
 ## License
 
-GNU/General Public License (see LICENSE.txt)
+GNU/General Public License (see [license.txt](license.txt))
 
 The ERPNext code is licensed as GNU General Public License (v3) and the Documentation is licensed as Creative Commons (CC-BY-SA-3.0) and the copyright is owned by Frappe Technologies Pvt Ltd (Frappe) and Contributors.