Update CHANGES.md

CHANGES.md

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 ## 1.0.5
 
-* Feature: Use Gravatar for profile image
+* Feature: Ensure to use Gravatar for profile image
 
 ## 1.0.4
 
 * Improvement: Detach code blocks before preProcess
-* Support: Deploy to Heroku with INSTALL_PLUGINS env
+* Support: Ensure to deploy to Heroku with INSTALL_PLUGINS env
 * Support: Ensure to load plugins easily when development
 
 ## 1.0.3