Fix java doc issue

Author: klustria

http/http/src/main/java/io/helidon/http/HeaderValues.java

@@ -353,7 +353,7 @@ public static Header create(String name, Collection<String> values) {
      * Create a new header. This header is considered unchanging and not sensitive.
      *
      * @param name   name of the header
-     * @param values Iterable<String> type values of the header, must contain at least one value (which may be an empty String)
+     * @param values Iterable&lt;String&gt; type values of the header, must contain at least one value (which may be an empty String)
      * @return a new header
      * @see #create(io.helidon.http.HeaderName, boolean, boolean, String...)
      * @throws java.lang.IllegalArgumentException in case the collection is empty
@@ -370,7 +370,7 @@ public static Header create(HeaderName name, Iterable<String> values) {
      * Create a new header. This header is considered unchanging and not sensitive.
      *
      * @param name   name of the header
-     * @param values Iterable<String> type values of the header, must contain at least one value (which may be an empty String)
+     * @param values Iterable&lt;String&gt; type values of the header, must contain at least one value (which may be an empty String)
      * @return a new header
      * @see #create(io.helidon.http.HeaderName, boolean, boolean, String...)
      * @throws java.lang.IllegalArgumentException in case the collection is empty