use updated namespace

Signed-off-by: Lukas Jungmann <lukas.jungmann@oracle.com>
diff --git a/spec/src/main/asciidoc/appE-external_binding.adoc b/spec/src/main/asciidoc/appE-external_binding.adoc
index b48ffc5..a4ca416 100644
--- a/spec/src/main/asciidoc/appE-external_binding.adoc
+++ b/spec/src/main/asciidoc/appE-external_binding.adoc
@@ -30,7 +30,7 @@
 
 [source,xml]
 ----
-<jaxb:bindings xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
+<jaxb:bindings xmlns:jaxb="https://jakarta.ee/xml/ns/jaxb"
                xmlns:xs="http://www.w3.org/2001/XMLSchema"
                version="3.0">
   <jaxb:bindings schemaLocation="A.xsd">
@@ -56,7 +56,7 @@
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
            xmlns:ens="http://example.com/ns"
            targetNamespace="http://example.com/ns"
-           xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
+           xmlns:jaxb="https://jakarta.ee/xml/ns/jaxb"
            jaxb:version="3.0">
   <xs:complexType name="aType">
     <xs:annotation>
@@ -106,7 +106,7 @@
 these trees as “external binding forest.”
 . Collect all the namespaces used in the
 elements inside the external binding forest, except the taxi namespace,
-`"http://java.sun.com/xml/ns/jaxb"`, and the no namespace. Allocate an
+`"https://jakarta.ee/xml/ns/jaxb"`, and the no namespace. Allocate an
 unique prefix for each of them and declare the namespace binding at all
 the root `<xs:schema>` elements of each schema documents. +
 Then add a `jaxb:extensionBindingPrefix` attribute to each `<xs:schema>`
diff --git a/spec/src/main/asciidoc/ch01-introduction.adoc b/spec/src/main/asciidoc/ch01-introduction.adoc
index a697886..3ec5144 100644
--- a/spec/src/main/asciidoc/ch01-introduction.adoc
+++ b/spec/src/main/asciidoc/ch01-introduction.adoc
@@ -382,7 +382,7 @@
 namespace as specified in [XSD Part 1] and [XSD Part 2]. The XML
 namespace prefix `xsi:` refers to the XML instance namespace defined in
 [XSD Part 1]. Additionally, the XML namespace prefix `jaxb:` refers to
-the JAXB namespace, `http://java.sun.com/xml/ns/jaxb`. The XML
+the JAXB namespace, `https://jakarta.ee/xml/ns/jaxb`. The XML
 namespace prefix `ref:` refers to the namespace
 `http://ws-i.org/profiles/basic/1.1/xsd` as defined in [WSIBP] and
 [WSIAP].