Soften shouting
Your task
A chat filter softens shouting. If a message contains at least one letter and every letter in it is uppercase, rewrite it: the first letter keeps its capital and every other letter becomes lowercase; non-letters are untouched. Otherwise return the message unchanged. For example, 'STOP DOING THAT' becomes 'Stop doing that', while 'ok FINE' is left alone.
Examples
fix_shouting(message: str) -> strExample 1
Input
fix_shouting("STOP DOING THAT")Output
"Stop doing that"