JariBakken: Fix doc bug by adding :css as valid locator for SearchContext#find_element{,s}.
JariBakken: Fix doc bug by adding :css as valid locator for SearchContext#find_element{,s}.

r12378

krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate