runtest: proper regex replace excluding .ncml and TEST_USE_PROD_DATA

Fix the previous commit not working as intended.

Author: tlvu

runtest

@@ -16,11 +16,12 @@ fi
 
 if [ ! -z "$PAVICS_HOST" ]; then
     echo "Will run notebooks against $PAVICS_HOST"
-    # .ncml links will always comes from the production server, not the server
+    # * .ncml links will always comes from the production server, not the server
     # under test since we do not perform regex replace for .ncml links.
-    # Any lines marked with TEST_USE_PROD_DATA will replace pavics to boreas to
-    # use data from prod and avoid having to replicate data to test servers.
-    sed -i "/\.ncml|TEST_USE_PROD_DATA/!s/pavics.ouranos.ca/$PAVICS_HOST/g" $NOTEBOOKS
+    #
+    # * Any lines marked with TEST_USE_PROD_DATA will also use data from prod
+    # and avoid having to replicate data to test servers.
+    sed -i "/\(\.ncml\|TEST_USE_PROD_DATA\)/!s/pavics.ouranos.ca/$PAVICS_HOST/g" $NOTEBOOKS
     git diff  # not working for notebooks from other repos
 fi