Update .evergreen/provision-atlas.sh

Author: Jibola

.evergreen/provision-atlas.sh

@@ -42,7 +42,7 @@ DATABASE=$DATABASE \
     $PYTHON_BINARY $SCAFFOLD_SCRIPT
 
 # If a search index configuration can be found, create the index
-if [ -f "$TARGET_DIR/indexes" ]; then
+if [ -d "$TARGET_DIR/indexes" ]; then
     for file in "$TARGET_DIR/indexes/*.json"; do
         $atlas deployments search indexes create --file $file --deploymentName $DIR
     done