[3.3] Add Documentation for Vacuum LITE (#3987)

#### Which Delta project/connector is this regarding?

- [X] Spark
- [ ] Standalone
- [ ] Flink
- [ ] Kernel
- [ ] Other (fill in here)

## Description

Adds Documentation for Vacuum LITE
 


## How was this patch tested?
N/A

## Does this PR introduce _any_ user-facing changes?

NO

docs/source/delta-utility.md

@@ -31,7 +31,13 @@ default retention threshold for the files is 7 days. To change this behavior, se
   .. lang:: sql
 
     ```sql
-    VACUUM eventsTable   -- vacuum files not required by versions older than the default retention period
+
+    VACUUM eventsTable   -- This runs VACUUM in ‘FULL’ mode and deletes data files outside of the retention duration and all files in the table directory not referenced by the table.
+
+    VACUUM eventsTable LITE   -- This VACUUM in ‘LITE’ mode runs faster.  
+                              -- Instead of finding all files in the table directory, `VACUUM LITE` uses the Delta transaction log to identify and remove files no longer referenced by any table versions within the retention duration.  
+                              -- If `VACUUM LITE` cannot be completed because the Delta log has been pruned a `DELTA_CANNOT_VACUUM_LITE` exception is raised.  
+                              -- This mode is available only in <Delta> 3.3 and above.
 
     VACUUM '/data/events' -- vacuum files in path-based table
 
@@ -719,4 +725,4 @@ CREATE OR REPLACE TABLE <target_table_name> SHALLOW CLONE iceberg.`/path/to/data
 .. <PrestoAnd> replace:: Presto and Athena
 
 .. <Delta> replace:: Delta Lake
-.. <AS> replace:: Apache Spark
+.. <AS> replace:: Apache Spark