[ci skip] show the correct example to demonstrate inflections.

[aditya-kapoor]

Show the correct example as mentioned in #31008.

Closes #31008

[phedkvist]

Line 84 and 74 still have the unwanted example.

[aditya-kapoor]

@phedkvist In #31008 I think we are looking at incorrect test case, because the test case in question has dash instead of underscore and the test case specifies the separator as _ instead of -. The other examples specified I think are correct and would work with default value of separator as -.

ActiveSupport::Inflector.parameterize("^trés|Jolie--") 
# => "tres_jolie"
ActiveSupport::Inflector.parameterize("^trés|Jolie-- ", preserve_case: true) 
# => "tres-Jolie"
ActiveSupport::Inflector.parameterize("^trés|Jolie--", separator: "_") 
# => "tres_jolie--"

[peagha]

I find it important to document the special dash and underscore behavior, wdyt of:

# It preserves dashes and underscores unless they are used as separators:
#
#  parameterize("^trés|Jolie__ ")                 # => "tres-jolie__"
#  parameterize("^trés|Jolie-- ", separator: "_") # => "tres_jolie--"
#  parameterize("^trés_Jolie-- ", separator: ".") # => "tres_jolie--"

It took me a long time to find out that parameterize had this behavior, so I expect this info to help other programmers in the future

[rafaelfranca]

👍 for @peagha suggestion

[aditya-kapoor]

@peagha @rafaelfranca Done!