Update README.md

Author: entantoencuanto

README.md

@@ -14,8 +14,9 @@ proposal components.
 
 Add this line to your application's Gemfile:
 
+For Decidim 0.24:
 ```ruby
-gem "decidim-anonymous_proposals", git: "https://github.com/PopulateTools/decidim-module-anonymous_proposals", branch: :main
+gem "decidim-anonymous_proposals", git: "https://github.com/PopulateTools/decidim-module-anonymous_proposals", branch: "release/0.24-stable"
 
 ```