Fix typo.

Should be last step before moving chrome.runtime.setUninstalURL to stable.

BUG=84556
TBR=rockot@chromium.org

Review URL: https://codereview.chromium.org/414303005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285779 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/data/extensions/api_test/runtime/uninstall_url/manifest.json

@@ -2,7 +2,7 @@
   "name": "Uninstall URL",
   "version": "0.1",
   "manifest_version": 2,
-  "description": "Browser test for chrome.runtime.setUninstallUrl",
+  "description": "Browser test for chrome.runtime.setUninstallURL",
   "permissions": [
     "management",
     "tabs",