Fix missing words in comment.

Introduced by commit c3928b467a, backpatch to v14 like that one.

Author: Amit Langote
Discussion: https://www.postgresql.org/message-id/CA+HiwqFQgNLS6VGntMcuJV6erBFV425xA6wBVnY=41GK4zC0Bw@mail.gmail.com

src/backend/executor/nodeForeignscan.c

@@ -265,8 +265,9 @@ ExecInitForeignScan(ForeignScan *node, EState *estate, int eflags)
 	{
 		/*
 		 * Direct modifications cannot be re-evaluated by EvalPlanQual, so
-		 * don't bother preparing the FDW.  There can ForeignScan nodes in the
-		 * EvalPlanQual subtree, but ExecForeignScan should never be called.
+		 * don't bother preparing the FDW.  There can be ForeignScan nodes in
+		 * the EvalPlanQual subtree, but ExecForeignScan should never be
+		 * called on them when EvalPlanQual is active.
 		 */
 		if (estate->es_epq_active == NULL)
 			fdwroutine->BeginDirectModify(scanstate, eflags);