doc: revert 80c20fcf3d and

0e93959a70

Revert patch that modified doc index mentions of search_path

Per Peter E.

doc/src/sgml/config.sgml

@@ -4778,8 +4778,7 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
      <varlistentry id="guc-search-path" xreflabel="search_path">
       <term><varname>search_path</varname> (<type>string</type>)</term>
       <indexterm>
-       <primary><varname>search_path</></primary>
-       <secondary>configuration parameter</secondary>
+       <primary><varname>search_path</> configuration parameter</primary>
       </indexterm>
       <indexterm><primary>path</><secondary>for schemas</></>
       <listitem>

doc/src/sgml/ddl.sgml

@@ -1735,8 +1735,7 @@ CREATE TABLE public.products ( ... );
    </para>
 
    <indexterm>
-    <primary><varname>search_path</varname></primary>
-    <secondary>configuration parameter</secondary>
+    <primary><varname>search_path</varname> configuration parameter</primary>
    </indexterm>
 
    <para>

doc/src/sgml/ref/create_function.sgml

@@ -674,7 +674,7 @@ SELECT * FROM dup(42);
   <title>Writing <literal>SECURITY DEFINER</literal> Functions Safely</title>
 
   <indexterm>
-   <primary><varname>search_path</varname></>
+   <primary><varname>search_path</varname> configuration parameter</>
    <secondary>use in securing functions</>
   </indexterm>