Fix unfortunate typo ("no" was missing)

Now flagged by Coverity, so still thinking about how to do it better if
feasible.
diff --git a/java/org/apache/catalina/core/StandardContext.java b/java/org/apache/catalina/core/StandardContext.java
index 27406d6..f4fb6f8 100644
--- a/java/org/apache/catalina/core/StandardContext.java
+++ b/java/org/apache/catalina/core/StandardContext.java
@@ -2128,10 +2128,8 @@
 
     @Override
     public ServletContext getServletContext() {
-        /*
-         * This method is called (multiple times) during context start which is single threaded so there is concurrency
-         * issue here.
-         */
+        // This method is called multiple times during context start which is single threaded
+        // so there is no concurrency issue
         if (context == null) {
             context = new ApplicationContext(this);
             if (altDDName != null) {