android-11 : added device markdown and oem tecno

Change-Id: I8fe8590869ba9287273bccf1e6c03977749bdd98
diff --git a/_config.yml b/_config.yml
index 2d79ea3..c51062c 100644
--- a/_config.yml
+++ b/_config.yml
@@ -181,6 +181,9 @@
   sony:
     output: true
 
+  tecno:
+    output: true
+
   twrp:
     output: true