docs(python): Mention deltalake write support in README (#13890)

README.md

@@ -208,7 +208,7 @@ pip install 'polars[numpy,pandas,pyarrow]'
 | connectorx | Support for reading from SQL databases                                       |
 | xlsx2csv   | Support for reading from Excel files                                         |
 | openpyxl   | Support for reading from Excel files with native types                       |
-| deltalake  | Support for reading from Delta Lake Tables                                   |
+| deltalake  | Support for reading and writing Delta Lake Tables                            |
 | pyiceberg  | Support for reading from Apache Iceberg tables                               |
 | plot       | Support for plot functions on Dataframes                                     |
 | timezone   | Timezone support, only needed if are on Python<3.9 or you are on Windows     |