doc improvement: use strict

[abraxxa]

Please add use strict; and possibly also use warnings; to the various docs, especially Type::Library and Type::Tiny::Manual::Libraries.
I just catched a typo after adding use v5.36; because I had pre-declared it with -declare => qw( Request_ID but later specified it as declare RequestID,.
This worked (for years!) until strict pointed me to the RequestID bareword.