Fix Sitesmanager description typo

plugins/SitesManager/lang/en.json

@@ -49,7 +49,7 @@
         "OnlyOneSiteAtTime": "You can only edit one website at a time. Please Save or Cancel your current modifications to the website %s.",
         "PiwikOffersEcommerceAnalytics": "Piwik allows for advanced Ecommerce Analytics tracking & reporting. Learn more about %s Ecommerce Analytics%s.",
         "PiwikWillAutomaticallyExcludeCommonSessionParameters": "Piwik will automatically exclude the common session parameters (%s).",
-        "PluginDescription": "Websites management lets you add a new website and edit existing websites. It also provides option ",
+        "PluginDescription": "Websites management lets you add a new website and edit existing websites. ",
         "SearchCategoryDesc": "Piwik can also track the Search category for each internal site search keyword.",
         "SearchCategoryLabel": "Category parameter",
         "SearchCategoryParametersDesc": "You may enter a comma-separated list of query parameters specifying the search category.",
@@ -74,4 +74,4 @@
         "YouCurrentlyHaveAccessToNWebsites": "You currently have access to %s websites.",
         "YourCurrentIpAddressIs": "Your current IP address is %s"
     }
-}
+}
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