Change "Check For Update" to "Check for update" for the update button.
Change "Check For Update" to "Check for update" for the update button.

This is to follow the Google UI standard sentence titling.

BUG=chromium-os:9294
TEST=confirmed that the button text changed properly

Review URL: http://codereview.chromium.org/5319004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@67427 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser