Update incorrect comment in uninit_visitor.rs

kani-compiler/src/kani_middle/transform/check_uninit/uninit_visitor.rs

@@ -24,7 +24,7 @@ pub enum MemoryInitOp {
  /// Set memory initialization state of data bytes in a memory region starting from the pointer
  /// `operand` and of length `count * sizeof(operand)` bytes.
  Set { operand: Operand, count: Operand, value: bool, position: InsertPosition },
- /// Check memory initialization of data bytes in a memory region starting from the reference to
+ /// Set memory initialization of data bytes in a memory region starting from the reference to
  /// `operand` and of length `count * sizeof(operand)` bytes.
  SetRef { operand: Operand, count: Operand, value: bool, position: InsertPosition },
  /// Unsupported memory initialization operation.