docs(transformer): fix comments (#7925)

Fix comment. It was inaccurate previously.

crates/oxc_transformer/src/common/duplicate.rs

@@ -126,7 +126,7 @@ impl<'a> TransformCtx<'a> {
             // If it *does* have expressions, but they're all literals, then also cannot have side effects,
             // but don't bother checking for that as it shouldn't occur in real world code.
             // Why would you write "`x${9}z`" when you can just write "`x9z`"?
-            // Note: "`x${foo}`" *can* have side effects if `foo` is an object with a `valueOf` method.
+            // Note: "`x${foo}`" *can* have side effects if `foo` is an object with a `toString` method.
             Expression::TemplateLiteral(lit) if lit.expressions.is_empty() => {
                 let references = create_array(|| {
                     ctx.ast.expression_template_literal(

crates/oxc_transformer/src/es2022/class_properties/computed_key.rs

@@ -116,7 +116,7 @@ fn key_needs_temp_var(key: &Expression, ctx: &TraverseCtx) -> bool {
         // If it *does* have expressions, but they're all literals, then also cannot have side effects,
         // but don't bother checking for that as it shouldn't occur in real world code.
         // Why would you write "`x${9}z`" when you can just write "`x9z`"?
-        // Note: "`x${foo}`" *can* have side effects if `foo` is an object with a `valueOf` method.
+        // Note: "`x${foo}`" *can* have side effects if `foo` is an object with a `toString` method.
         Expression::TemplateLiteral(lit) => !lit.expressions.is_empty(),
         // `IdentifierReference`s can have side effects if is unbound.
         //