Update about dialog to include Vista

browser/locales/en-US/browser/aboutDialog.ftl

@@ -59,9 +59,9 @@ warningDesc-version = { -brand-short-name } is experimental and may be unstable.
 aboutdialog-help-user = { -brand-product-name } Help
 aboutdialog-submit-feedback = Submit Feedback
 
-community-exp = <label data-l10n-name="community-exp-mozillaLink">{ -vendor-short-name }</label> is a <label data-l10n-name="community-exp-creditsLink">global community</label> working together to keep the Web open, public and accessible to those who use Windows 7/8.
+community-exp = <label data-l10n-name="community-exp-mozillaLink">{ -vendor-short-name }</label> is a <label data-l10n-name="community-exp-creditsLink">global community</label> working together to keep the Web open, public and accessible to those who use Windows Vista, 7, and 8.
 
-community-2 = { -brand-short-name } is designed by <label data-l10n-name="community-mozillaLink">{ -vendor-short-name }</label>, a <label data-l10n-name="community-creditsLink">global community</label> working together to keep the Web open, public and accessible to those who use Windows 7/8.
+community-2 = { -brand-short-name } is designed by <label data-l10n-name="community-mozillaLink">{ -vendor-short-name }</label>, a <label data-l10n-name="community-creditsLink">global community</label> working together to keep the Web open, public and accessible to those who use Windows Vista, 7, and 8.
 
 helpus = Want to help? <label data-l10n-name="helpus-getInvolvedLink">Contribute</label> to the dream of keeping a good computing experience alive!