Fix typos

BUG=https://github.com/ibus/ibus/pull/2111
BUG=https://github.com/ibus/ibus/pull/2112

bus/main.c

@@ -342,7 +342,7 @@ main (gint argc, gchar **argv)
         * in gonme-shell when the session is logging out.
         * Maybe using SessionManager.LogoutRemote() or
         * global.screen.get_display().get_xdisplay()
-        * But I assume thereare other scenarios to causes the problem.
+        * But I assume there are other scenarios to cause the problem.
         *
         * And I decided ibus-daemon always exits with the parent's death here
         * to avoid unexpected ibus restarts during the logout.

src/ibusobservedpath.c

@@ -247,7 +247,7 @@ ibus_observed_path_parse_xml_node (IBusObservedPath *path,
     }
 
     if (node->text[0] == '~' && node->text[1] != G_DIR_SEPARATOR) {
-        g_warning ("invalide path \"%s\"", node->text);
+        g_warning ("Invalid path \"%s\"", node->text);
         return FALSE;
     }
 

tools/ibus.1.in

@@ -105,7 +105,7 @@ option. Can choose a language of emoji annotations with
 option. If LANG="en", IBus Emojier loads /usr/share/ibus/dicts/emoji-en.dict .
 .B \-\-partial\-match
 option enables to match annotations with a partial string. These settings
-are avaiable with
+are available with
 .B ibus\-setup (1)
 utility.