docs(linter): update stale comment (#27519)

Comments-only change. Fix a comment which was no longer accurate after #27393.

crates/oxc_linter/src/lib.rs

@@ -792,7 +792,7 @@ impl Linter {
         span_converter.convert_program(program);
 
         // Convert comment spans to UTF-16.
-        // Also set the `content` field (byte 15) of each comment to `None` (0).
+        // Also set the `content` field of each comment to `None` (0).
         // JS side uses this byte as a "deserialized" flag for tracking lazy deserialization.
         if let Some(mut converter) = span_converter.converter() {
             for comment in &mut program.comments {