Fix typo in previous pgbench --progress patch.

contrib/pgbench/pgbench.c

@@ -354,7 +354,7 @@ usage(void)
 		                                           "(default: simple)\n"
 		   "  -n, --no-vacuum          do not run VACUUM before tests\n"
 		   "  -N, --skip-some-updates  skip updates of pgbench_tellers and pgbench_branches\n"
-		   "  -P, --progress NUM       show thread progress report every NUM seconds\n"
+		   "  -P, --progress=NUM       show thread progress report every NUM seconds\n"
 		   "  -r, --report-latencies   report average latency per command\n"
 		   "  -s, --scale=NUM          report this scale factor in output\n"
 		   "  -S, --select-only        perform SELECT-only transactions\n"

doc/src/sgml/pgbench.sgml

@@ -409,10 +409,10 @@ pgbench <optional> <replaceable>options</> </optional> <replaceable>dbname</>
 
      <varlistentry>
       <term><option>-P</option> <replaceable>sec</></term>
-      <term><option>--progress</option> <replaceable>sec</></term>
+      <term><option>--progress=</option> <replaceable>sec</></term>
       <listitem>
        <para>
-	Show progress report about every <literal>sec</> seconds.
+	      Show progress report every <literal>sec</> seconds.
        </para>
       </listitem>
      </varlistentry>