FIX package documentation

Signed-off-by: Nicolas Lamirault <[email protected]>

Author: nlamirault

opensource.el

@@ -27,7 +27,8 @@
 
 ;;; Installation:
 
-;; Available as a package in melpa.org.
+;; opensource is available on the two major community maintained repositories -                                                                                                     
+;; Melpa stable (https://stable.melpa.org), and Melpa (https://melpa.org)
 
 ;; (add-to-list 'package-archives
 ;;              '("melpa" . "https://melpa.org/packages/") t)