tracks/lua/exercises/etl/README.md in trackler-2.2.1.50 vs tracks/lua/exercises/etl/README.md in trackler-2.2.1.51

@@ -1,5 +1,5 @@
-# Etl
+# ETL
 
 We are going to do the `Transform` step of an Extract-Transform-Load.
 
 ### ETL