lexer: Fix copy+paste error in greater. Now emits Rsh tokens~!

src/lexer.rs

@@ -169,7 +169,7 @@ impl<'t> Lexer<'t> {
     }
     fn greater(&mut self) -> Option<Token<'t>> {
         match self.peek() {
-            Some('>') => self.then().emit(TokenKind::Lsh),
+            Some('>') => self.then().emit(TokenKind::Rsh),
             _ => todo!("greater"),
         }
     }