Example descriptions and their examples were flipped. Fix.

activesupport/lib/active_support/core_ext/string/filters.rb

@@ -25,13 +25,13 @@ def squish!
   #   "Once upon a time in a world far far away".truncate(27)
   #   # => "Once upon a time in a wo..."
   #
-  # The last characters will be replaced with the <tt>:omission</tt> string (defaults to "...")
-  # for a total length not exceeding <tt>:length</tt>:
+  # Pass a <tt>:separator</tt> to truncate +text+ at a natural break:
   #
   #   "Once upon a time in a world far far away".truncate(27, :separator => ' ')
   #   # => "Once upon a time in a..."
   #
-  # Pass a <tt>:separator</tt> to truncate +text+ at a natural break:
+  # The last characters will be replaced with the <tt>:omission</tt> string (defaults to "...")
+  # for a total length not exceeding <tt>:length</tt>:
   #
   #   "And they found that many people were sleeping better.".truncate(25, :omission => "... (continued)")
   #   # => "And they f... (continued)"