Change default behaviour of pagy overflow

to :empty_page to prevent the last page always showing up when
bots crawl page numbers that do not exist.

[#1346]

config/initializers/pagy.rb

@@ -180,7 +180,7 @@
 # Overflow extra: Allow for easy handling of overflowing pages
 # See https://ddnexus.github.io/pagy/docs/extras/overflow
 require 'pagy/extras/overflow'
-Pagy::DEFAULT[:overflow] = :last_page    # (other options: :empty_page and :exception)
+Pagy::DEFAULT[:overflow] = :empty_page    # (other options: :last_page, :empty_page and :exception)
 
 # Support extra: Extra support for features like: incremental, infinite, auto-scroll pagination
 # See https://ddnexus.github.io/pagy/docs/extras/support