Update drush sql-sync --target-dump and --source-dump documentation. …

…See #1435

commands/sql/sqlsync.drush.inc

@@ -47,7 +47,7 @@ function sqlsync_drush_command() {
       'source-db-url' => 'Database specification for source system to dump from.',
       'source-remote-port' => 'Override sql database port number in source-db-url. Optional.',
       'source-remote-host' => 'Remote machine to run sql-dump file on. Optional; default is local machine.',
-      'source-dump' => 'The destination for the dump file, or the path to the dump file when --no-dump is specified.',
+      'source-dump' => 'The destination for the dump file, or the path to the dump file when --no-dump is specified. Format: "--source-dump=/dumpdir/db.sql"',
       'source-database' => 'A key in the $db_url (D6) or $databases (D7+) array which provides the data.',
       'source-target' => array(
         'description' => 'A key within the SOURCE database identifying a particular server in the database group.',
@@ -59,7 +59,7 @@ function sqlsync_drush_command() {
       'target-db-url' => '',
       'target-remote-port' => '',
       'target-remote-host' => '',
-      'target-dump' => 'A path for saving the dump file on target. Mandatory when using --no-sync.',
+      'target-dump' => 'A path for saving the dump file on target. Mandatory when using --no-sync. Format: "--target-dump=/dumpdir/db.sql.gz"',
       'target-database' => 'A key in the $db_url (D6) or $databases (D7+) array which shall receive the data.',
       'target-target' => array(
         'description' => 'Oy. A key within the TARGET database identifying a particular server in the database group.',