fix typos

core/run-registrar.sh

@@ -2,7 +2,7 @@
 
 echo "Running registrar"
 replace=""
-if test "$PREPROCESSOR_REPLACE" = true; then
+if test "$REGISTRAR_REPLACE" = true; then
     replace="--replace"
 fi
 

docker-compose.dem.yml

@@ -165,7 +165,7 @@ configs:
   client-ops:
     file: ./config/dem_index-ops.html
   preprocessor-config:
-    file: ./config/dem-config.yml
+    file: ./config/dem_preprocessor-config.yml
 volumes:
   db-data:
   redis-data: