docs: fix a comment

lib/saxes.js

@@ -1003,14 +1003,9 @@ class SaxesParser {
   /** @private */
   handleTextOutsideRoot() {
     // This is essentially a specialized version of captureTo which is optimized
-    // for performing the ]]> check. A previous version of this code, checked
-    // ``this.text`` for the presence of ]]>. It simplified the code but was
-    // very costly when character data contained a lot of entities to be parsed.
-    //
-    // Since we are using a specialized loop, we also keep track of the presence
-    // of non-space characters in the text since these are errors when appearing
-    // outside the document root element.
-    //
+    // for a specialized task. We keep track of the presence of non-space
+    // characters in the text since these are errors when appearing outside the
+    // document root element.
     const { chunk, limit, i: start } = this;
     let nonSpace = false;
     // eslint-disable-next-line no-labels, no-restricted-syntax