Manual: Added some markers to affect Pagefind weights

Author: ddekany

freemarker-manual/src/main/docgen/en_US/book.xml

@@ -12819,7 +12819,7 @@ grant codeBase "file:/path/to/freemarker.jar"
         <primary>built-in</primary>
       </indexterm>
 
-      <section xml:id="ref_builtins_alphaidx">
+      <section role="index" xml:id="ref_builtins_alphaidx">
         <title>Alphabetical index</title>
 
         <note>
@@ -21060,7 +21060,7 @@ with_args_last:
         <primary>directive</primary>
       </indexterm>
 
-      <section xml:id="ref_directive_alphaidx">
+      <section role="index" xml:id="ref_directive_alphaidx">
         <title>Alphabetical index</title>
 
         <note>
@@ -30455,7 +30455,7 @@ TemplateModel x = env.getVariable("x");  // get variable x</programlisting>
       </qandaset>
     </appendix>
 
-    <appendix xml:id="app_versions">
+    <appendix role="changelog" xml:id="app_versions">
       <title>Version history</title>
 
       <section xml:id="versions_2_3_34">