Add few minor fixes.
Add few minor fixes.

Remove I<> that wasn't being rendered inside C<>, fix a typo, etc.

tbrowder/doc,perl6/doc,stmuk/doc,perl6/doc,tbrowder/doc,stmuk/doc,perl6/doc,perl6/doc,MasterDuke17/doc,tbrowder/doc,stmuk/doc,perl6/doc,MasterDuke17/doc,MasterDuke17/doc,stmuk/doc,stmuk/doc,MasterDuke17/doc,tbrowder/doc