Fix small copy/paste bug in recent shell rule.

Change-Id: Ia279dfd11cc093e066bff66d7397dfe9e906aba8
diff --git a/shell.te b/shell.te
index e7d03e8..a58fc5d 100644
--- a/shell.te
+++ b/shell.te
@@ -76,4 +76,4 @@
 allow shell bootchart_data_file:file create_file_perms;
 
 # Follow the /storage/self/primary symlink
-allow appdomain storage_file:lnk_file r_file_perms;
+allow shell storage_file:lnk_file r_file_perms;