Update README.md

Author: foksk76

README.md

@@ -64,7 +64,7 @@ Unfreezes all frozen indices in the cluster.
 **Usage**:
 
 ```bash
-python unfreeze_indices.py [--host <HOST>] [--username <USERNAME>] [--password <PASSWORD>] [--no-verify-certs]
+python unfreeze_indices.py [--host HOST] [--username USERNAME] [--password PASSWORD] [--no-verify-certs]
 ```
 
 ### `reindex_elasticsearch.py`
@@ -74,7 +74,7 @@ Reindex a range of indexes in Elasticsearch.
 **Usage**:
 
 ```bash
-python reindex_elasticsearch.py [--host <HOST>] [--username <USERNAME>] [--password <PASSWORD>] --start-index <START_INDEX> --end-index <END_INDEX> [--alias ALIAS] [--no-verify-certs]
+python reindex_elasticsearch.py [--host HOST] [--username USERNAME] [--password PASSWORD] --start-index START_INDEX --end-index END_INDEX [--alias ALIAS] [--no-verify-certs]
 ```
 
 **Command-line arguments:**
@@ -120,4 +120,4 @@ We welcome contributions! Please follow these steps:
 
 ## License
 
-This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENSE) file for details.
+This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENSE) file for details.