Updated symbols for fi (#17595)
Now that the incorrect regular expression for the euro symbol has been removed, the corresponding euro symbol line in the symbols block is no longer needed. Additionally, the interpretation of the line feed and carriage return characters has been modified so that the Finnish Mikropuhe speech synthesizer can pause at those points when say all is used.
Description of user facing changes
Removed an unnecessary line related to the euro symbol from the symbols block
Changed the interpretation of line feed (\n) and carriage return (\r) characters
