Update vector-index-memory-configuration.adoc

I think this is clearer, that we're agreeing with the memory config section, not contradicting it.

Author: mauvo

modules/ROOT/pages/performance/vector-index-memory-configuration.adoc

@@ -2,7 +2,7 @@
 :description: How to configure Neo4j vector indexes to enhance performance in search operations.
 
 Vector indexes are based on link:https://lucene.apache.org/[Lucene].
-Lucene uses OS memory, not Neo4j page cache memory, as described in the xref:performance/memory-configuration.adoc[Memory configuration] section.
+Lucene does not Neo4j page cache memory, it uses OS memory as described in the xref:performance/memory-configuration.adoc[Memory configuration] section.
 When you have a vector index, you must ensure that the OS has sufficient memory for the JVM heap, Neo4j page cache, and the Lucene vector indexes to perform optimally.
 If Lucene has insufficient memory, the OS will perform page swapping and read data from disk, which will dramatically degrade the Neo4j vector index search performance.
 Tools like IOTOP can assist in understanding disk I/O usage.
@@ -169,4 +169,4 @@ The following examples show how to calculate the memory requirements when vector
 | 31GB
 | 410.5GB
 | 70.5GB
-|===
+|===