doc: Add index entry for "multirange type"

petere · petere · commit 5df6aeab4227 · 2021-05-03T20:14:03.000+02:00
Before now, looking up "multirange" in the index only led to the
multirange() function.  To make this more useful, also add an entry
pointing to the range types section.
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
@@ -19206,7 +19206,7 @@ SELECT NULLIF(value, '(none)') ...
       <row>
        <entry role="func_table_entry"><para role="func_signature">
         <indexterm>
-         <primary>multirange</primary>
+         <primary>multirange (function)</primary>
         </indexterm>
         <function>multirange</function> ( <type>anyrange</type> )
         <returnvalue>anymultirange</returnvalue>
diff --git a/doc/src/sgml/rangetypes.sgml b/doc/src/sgml/rangetypes.sgml
@@ -7,6 +7,10 @@
   <primary>range type</primary>
  </indexterm>
 
+ <indexterm>
+  <primary>multirange type</primary>
+ </indexterm>
+
  <para>
   Range types are data types representing a range of values of some
   element type (called the range's <firstterm>subtype</firstterm>).
