Doc: Fix and tweak documentation for ANALYZE reporting

The docs had some typos and grammar mistakes, and its indentation was
inconsistent.

Author: Amit Langote, Justin Pryzby
Discussion: https://postgr.es/m/20200116151930.GM26045@telsasoft.com

doc/src/sgml/monitoring.sgml

@@ -3571,51 +3571,53 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
      <entry><structfield>sample_blks_total</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Total number of heap blocks that will be sampled.
+      Total number of heap blocks that will be sampled.
      </entry>
     </row>
     <row>
      <entry><structfield>sample_blks_scanned</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Number of heap blocks scanned.
+      Number of heap blocks scanned.
      </entry>
     </row>
     <row>
      <entry><structfield>ext_stats_total</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Number of extended statistics.
+      Number of extended statistics.
      </entry>
     </row>
     <row>
      <entry><structfield>ext_stats_computed</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Number of computed extended statistics computed.  This counter only advances when
-       the phase is <literal>computing extended statistics</literal>.
+      Number of extended statistics computed. This counter only advances
+      when the phase is <literal>computing extended statistics</literal>.
      </entry>
     </row>
     <row>
      <entry><structfield>child_tables_total</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Number of child tables.
+      Number of child tables.
      </entry>
     </row>
     <row>
      <entry><structfield>child_tables_done</structfield></entry>
      <entry><type>bigint</type></entry>
      <entry>
-       Number of child tables scanned.  This counter only advances when the phase
-       is <literal>acquiring inherited sample rows</literal>.
+      Number of child tables scanned. This counter only advances when the
+      phase is <literal>acquiring inherited sample rows</literal>.
      </entry>
     </row>
     <row>
      <entry><structfield>current_child_table_relid</structfield></entry>
      <entry><type>oid</type></entry>
-     <entry>OID of the child table currently being scanned. This field is only valid when
-       the phase is <literal>computing extended statistics</literal>.
+     <entry>
+      OID of the child table currently being scanned. This field is
+      only valid when the phase is
+      <literal>acquiring inherited sample rows</literal>.
      </entry>
     </row>
    </tbody>
@@ -3626,58 +3628,58 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
    <title>ANALYZE phases</title>
    <tgroup cols="2">
     <thead>
-    <row>
+     <row>
       <entry>Phase</entry>
       <entry>Description</entry>
      </row>
     </thead>
-   <tbody>
-    <row>
-     <entry><literal>initializing</literal></entry>
-     <entry>
+    <tbody>
+     <row>
+      <entry><literal>initializing</literal></entry>
+      <entry>
        The command is preparing to begin scanning the heap.  This phase is
        expected to be very brief.
-     </entry>
-    </row>
-    <row>
-     <entry><literal>acquiring sample rows</literal></entry>
-     <entry>
+      </entry>
+     </row>
+     <row>
+      <entry><literal>acquiring sample rows</literal></entry>
+      <entry>
        The command is currently scanning the table given by
-       <structfield>current_relid</structfield> to obtain sample rows.
-     </entry>
-    </row>
-    <row>
-     <entry><literal>acquiring inherited sample rows</literal></entry>
-     <entry>
-       The command is currently scanning child tables to obtain sample rows. Columns
-       <structfield>child_tables_total</structfield>,
+       <structfield>relid</structfield> to obtain sample rows.
+      </entry>
+     </row>
+     <row>
+      <entry><literal>acquiring inherited sample rows</literal></entry>
+      <entry>
+       The command is currently scanning child tables to obtain sample rows.
+       Columns <structfield>child_tables_total</structfield>,
        <structfield>child_tables_done</structfield>, and
-       <structfield>current_child_table_relid</structfield> contain the progress
-       information for this phase.
-     </entry>
-    </row>
-    <row>
-     <entry><literal>computing statistics</literal></entry>
-     <entry>
-       The command is computing statistics from the samples rows obtained during
-       the table scan.
-     </entry>
-    </row>
-    <row>
-     <entry><literal>computing extended statistics</literal></entry>
-     <entry>
-       The command is computing extended statistics from the samples rows obtained
-       durring the table scan.
-     </entry>
-    </row>
-    <row>
-     <entry><literal>finalizing analyze</literal></entry>
-     <entry>
+       <structfield>current_child_table_relid</structfield> contain the
+       progress information for this phase.
+      </entry>
+     </row>
+     <row>
+      <entry><literal>computing statistics</literal></entry>
+      <entry>
+       The command is computing statistics from the sample rows obtained
+       during the table scan.
+      </entry>
+     </row>
+     <row>
+      <entry><literal>computing extended statistics</literal></entry>
+      <entry>
+       The command is computing extended statistics from the sample rows
+       obtained during the table scan.
+      </entry>
+     </row>
+     <row>
+      <entry><literal>finalizing analyze</literal></entry>
+      <entry>
        The command is updating pg_class. When this phase is completed, 
        <command>ANALYZE</command> will end.
-     </entry>
-    </row>
-   </tbody>
+      </entry>
+     </row>
+    </tbody>
    </tgroup>
   </table>