doc: Tweak synopsis indentation for consistency

Peter Eisentraut <peter_e@gmx.net>

Commit: 265728e1b60858f9db8a3e7fb538477a28fc74a3
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2015-09-22T03:32:19Z
Releases: 9.5.0
doc: Tweak synopsis indentation for consistency

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