Merge pull request #254 from smlx/update-readme

chore: add note about immutable releases

Author: smlx

README.md

@@ -91,6 +91,10 @@ Configure the repository:
 
 1. Go to repository Settings > General:
 
+    1. Releases
+
+        * Enable release immutability
+
     1. Features
 
         * Disable wiki and projects (unless you plan to use them!)