Fix comments

openlp/core/lib/plugin.py

@@ -384,6 +384,9 @@ class Plugin(QtCore.QObject):
     def refreshCss(self, frame):
         """
         Allow plugins to refresh javascript on displayed screen.
+
+        ``frame``
+            The Web frame holding the page.
         """
         return u''
 

openlp/plugins/alerts/alertsplugin.py

@@ -203,8 +203,8 @@ class AlertsPlugin(Plugin):
         """
         Trigger an update of the CSS in the maindisplay.
 
-        `frame`
-            The Web frame holding the page
+        ``frame``
+            The Web frame holding the page.
         """
         align = VerticalType.Names[self.settings_tab.location]
         frame.evaluateJavaScript(u'update_css("%s", "%s", "%s", "%s", "%s")' %