Remove extra whitespace and fix a comment

minor comment fix for consistency

Author: agis

railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt

@@ -24,10 +24,10 @@
 
   <%- unless options.skip_sprockets? -%>
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor  = :uglifier
+  config.assets.js_compressor = :uglifier
   # config.assets.css_compressor = :sass
 
-  # Whether to fallback to assets pipeline if a precompiled asset is missed.
+  # Do not fallback to assets pipeline if a precompiled asset is missed.
   config.assets.compile = false
 
   # Generate digests for assets URLs.