Remove Freeze and add Share in vim's syntax

Author: flaper87

src/etc/vim/syntax/rust.vim

@@ -52,7 +52,7 @@ syn keyword   rustType        f64 i8 i16 i32 i64 str Self
 " to make it easy to update.
 
 " Core operators {{{3
-syn keyword   rustTrait       Freeze Copy Send Sized
+syn keyword   rustTrait       Share Copy Send Sized
 syn keyword   rustTrait       Add Sub Mul Div Rem Neg Not
 syn keyword   rustTrait       BitAnd BitOr BitXor
 syn keyword   rustTrait       Drop