Docs: Add Spark streaming option skip-overwrites (apache#4121)

docs/versioned/spark/spark-structured-streaming.md

@@ -44,7 +44,7 @@ val df = spark.readStream
 ```
 
 {{< hint warning >}}
-Iceberg only supports reading data from append snapshots. Overwrite snapshots cannot be processed and will cause an exception. Similarly, delete snapshots will cause an exception by default, but deletes may be ignored by setting `streaming-skip-delete-snapshots=true`.
+Iceberg only supports reading data from append snapshots. Overwrite snapshots cannot be processed and will cause an exception by default. Overwrites may be ignored by setting `streaming-skip-overwrite-snapshots=true`. Similarly, delete snapshots will cause an exception by default, and deletes may be ignored by setting `streaming-skip-delete-snapshots=true`.
 {{</ hint >}}
 
 ## Streaming Writes