Fix a missing article in the documentation

Per complaint from Grant Gryczan.

It's a very old typo; backpatch all the way back.

Author: Laurenz Albe <[email protected]>
Discussion: https://postgr.es/m/172179789219.915368.16590585529628354757@wrigleys.postgresql.org

diff --git a/doc/src/sgml/parallel.sgml b/doc/src/sgml/parallel.sgml
index 340d47af087164ffeaa38e4f4e5f89832505a74f..f426473209e87f5c4ad0c44972e0df90369ddbfa 100644 (file)
--- a/doc/src/sgml/parallel.sgml
+++ b/doc/src/sgml/parallel.sgml
@@ -187,7 +187,7 @@ EXPLAIN SELECT * FROM pgbench_accounts WHERE filler LIKE '%x%';
   </itemizedlist>
 
   <para>
-    Even when parallel query plan is generated for a particular query, there
+    Even when a parallel query plan is generated for a particular query, there
     are several circumstances under which it will be impossible to execute
     that plan in parallel at execution time.  If this occurs, the leader
     will execute the portion of the plan below the <literal>Gather</literal>