Add jakarta- prefix to spec file names (#135)

Signed-off-by: Jean-Louis Monteiro <jlmonteiro@tomitribe.com>
diff --git a/spec/pom.xml b/spec/pom.xml
index 38331d4..7772f80 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -172,7 +172,7 @@
                         </goals>
                         <configuration>
                             <backend>html5</backend>
-                            <outputFile>${project.build.directory}/generated-docs/expression-language-spec-${project.version}.html</outputFile>
+                            <outputFile>${project.build.directory}/generated-docs/jakarta-expression-language-spec-${project.version}.html</outputFile>
                             <attributes>
                                 <doctype>book</doctype>
                                 <status>${status}</status>
@@ -195,7 +195,7 @@
                         </goals>
                         <configuration>
                             <backend>pdf</backend>
-                            <outputFile>${project.build.directory}/generated-docs/expression-language-spec-${project.version}.pdf</outputFile>
+                            <outputFile>${project.build.directory}/generated-docs/jakarta-expression-language-spec-${project.version}.pdf</outputFile>
                             <attributes>
                                 <pdf-stylesdir>${project.basedir}/src/main/theme</pdf-stylesdir>
                                 <pdf-style>jakartaee</pdf-style>