Doc: Fix documentation about cookie stores

Remove misleading "singleton, if one has been set" from the accessor's
documentation. Also link to the accessor's from the class documentation,
and remove mentioning of cookie store as something that can be accessed
for an individual page.

Finally, mark QWebEngineProfile::cookieStore as new in Qt 5.6.

Change-Id: Ia20ca0ef45a9a15de0052f7ceb7f59d454c70fdc
Reviewed-by: Florian Bruhin <qt-project.org@the-compiler.org>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions