Fix some typos

Author: kingysu

src/frontend/dbusfrontend/dbusfrontend.cpp

@@ -397,10 +397,10 @@ class DBusInputContext1 : public InputContext,
                                "a(si)i");
     FCITX_OBJECT_VTABLE_SIGNAL(deleteSurroundingTextDBus,
                                "DeleteSurroundingText", "iu");
-    // This is contains:
+    // This contains:
     // - a(si)i preedit
     // - a(si) aux up
-    // - a(si) aux aux
+    // - a(si) aux down
     // - a(ss) candidate label + text
     // - i candidate index
     // - i candidate layout

src/lib/fcitx-utils/dbus/matchrule.h

@@ -24,7 +24,7 @@ class MatchRulePrivate;
 class Message;
 
 /**
- * A dbus matching rull to be used with add match.
+ * A dbus matching rule to be used with add match.
  *
  * Usually it is used to monitor certain signals on the bus.
  *