Docs: removing/repairing references to removed/changed gucs

gpdb-doc/dita/ref_guide/config_params/guc_config.ditamap

@@ -240,7 +240,6 @@
             <topicref href="guc-list.xml#optimizer_sort_factor"/>
             <topicref href="guc-list.xml#password_encryption"/>
             <topicref href="guc-list.xml#password_hash_algorithm"/>
-            <topicref href="guc-list.xml#pgstat_track_activity_query_size"/>
             <topicref href="guc-list.xml#pljava_classpath"/>
             <topicref href="guc-list.xml#pljava_classpath_insecure"/>
             <topicref href="guc-list.xml#pljava_statement_cache_size"/>
@@ -275,8 +274,7 @@
             <topicref href="guc-list.xml#temp_buffers"/>
             <topicref href="guc-list.xml#TimeZone"/>
             <topicref href="guc-list.xml#timezone_abbreviations"/>
-            <topicref href="guc-list.xml#track_activities"/>
-            <topicref href="guc-list.xml#track_counts"/>
+            <topicref href="guc-list.xml#track_activity_query_size"/>
             <topicref href="guc-list.xml#transaction_isolation"/>
             <topicref href="guc-list.xml#transaction_read_only"/>
             <topicref href="guc-list.xml#transform_null_equals"/>

gpdb-doc/dita/ref_guide/system_catalogs/pg_stat_activity.xml

@@ -7,8 +7,8 @@ that report data on the current query are available unless the parameter
 <codeph>stats_command_string</codeph> has been turned off. Furthermore,
 these columns are only visible if the user examining the view is a superuser
 or the same as the user owning the process being reported on.</p><p>The maximum length of the query text string stored in the column <codeph>current_query</codeph>
-can be controlled with the server configuration parameter <codeph>pgstat_track_activity_query_size</codeph>.
-</p><table id="hq141982"><title>pg_catalog.pg_stat_activity</title><tgroup cols="4"><colspec colnum="1" colname="col1" colwidth="131pt"/><colspec colnum="2" colname="col2" colwidth="86pt"/><colspec colnum="3" colname="col3" colwidth="85pt"/><colspec colnum="4" colname="col4" colwidth="147pt"/><thead><row><entry colname="col1">column</entry><entry colname="col2">type</entry><entry colname="col3">references</entry><entry colname="col4">description</entry></row></thead><tbody><row><entry colname="col1"><codeph>datid</codeph></entry><entry colname="col2">oid</entry><entry colname="col3">pg_database.oid</entry><entry colname="col4">Database OID</entry></row><row><entry colname="col1"><codeph>datname</codeph></entry><entry colname="col2">name</entry><entry colname="col3"/><entry colname="col4">Database name</entry></row>
+      can be controlled with the server configuration parameter
+        <codeph>track_activity_query_size</codeph>. </p><table id="hq141982"><title>pg_catalog.pg_stat_activity</title><tgroup cols="4"><colspec colnum="1" colname="col1" colwidth="131pt"/><colspec colnum="2" colname="col2" colwidth="86pt"/><colspec colnum="3" colname="col3" colwidth="85pt"/><colspec colnum="4" colname="col4" colwidth="147pt"/><thead><row><entry colname="col1">column</entry><entry colname="col2">type</entry><entry colname="col3">references</entry><entry colname="col4">description</entry></row></thead><tbody><row><entry colname="col1"><codeph>datid</codeph></entry><entry colname="col2">oid</entry><entry colname="col3">pg_database.oid</entry><entry colname="col4">Database OID</entry></row><row><entry colname="col1"><codeph>datname</codeph></entry><entry colname="col2">name</entry><entry colname="col3"/><entry colname="col4">Database name</entry></row>
           <row>
             <entry><codeph>pid</codeph></entry>
             <entry>integer</entry>