ext/standard: Fix phpcredits() heading alignment

[LamentXU123]

PHP Group
Thies C. Arntzen, Stig Bakken, Shane Caraveo, Andi Gutmans, Rasmus Lerdorf, Sam Ruby, Sascha Schumann, Zeev Suraski, Jim Winstead, Andrei Zmievski

Language Design & Concept
Andi Gutmans, Rasmus Lerdorf, Zeev Suraski, Marcus Boerger

                               PHP Authors                               
Contribution => Authors
Zend Scripting Language Engine => Andi Gutmans, Zeev Suraski, Stanislav Malyshev, Marcus Boerger, Dmitry Stogov, Xinchen Hui, Nikita Popov
Extension Module API => Andi Gutmans, Zeev Suraski, Andrei Zmievski
UNIX Build and Modularization => Stig Bakken, Sascha Schumann, Jani Taskinen, Peter Kokot
Windows Support => Shane Caraveo, Zeev Suraski, Wez Furlong, Pierre-Alain Joye, Anatol Belski, Kalle Sommer Nielsen
Server API (SAPI) Abstraction Layer => Andi Gutmans, Shane Caraveo, Zeev Suraski
Streams Abstraction Layer => Wez Furlong, Sara Golemon
PHP Data Objects Layer => Wez Furlong, Marcus Boerger, Sterling Hughes, George Schlossnagle, Ilia Alshanetsky
Output Handler => Zeev Suraski, Thies C. Arntzen, Marcus Boerger, Michael Wallner
Consistent 64 bit support => Anthony Ferrara, Anatol Belski

                               SAPI Modules                               
Contribution => Authors
Apache 2 Handler => Ian Holsman, Justin Erenkrantz (based on Apache 2 Filter code)
CGI / FastCGI => Rasmus Lerdorf, Stig Bakken, Shane Caraveo, Dmitry Stogov
CLI => Edin Kadribasic, Marcus Boerger, Johannes Schlueter, Moriyoshi Koizumi, Xinchen Hui
Embed => Edin Kadribasic
FastCGI Process Manager => Andrei Nigmatulin, dreamcat4, Antony Dovgal, Jerome Loyet
litespeed => George Wang
phpdbg => Felipe Pena, Joe Watkins, Bob Weinand

The first two title is wrongly aligned.

[iliaal]

LGTM