DenseVectorFieldMapper fixed typo (#108065)

* DVFM fixed typo

docs/changelog/108065.yaml

@@ -0,0 +1,5 @@
+pr: 108065
+summary: '`DenseVectorFieldMapper` fixed typo'
+area: Mapping
+type: bug
+issues: []

server/src/main/java/org/elasticsearch/index/mapper/vectors/DenseVectorFieldMapper.java

@@ -1414,7 +1414,7 @@ public class DenseVectorFieldMapper extends FieldMapper {
                     + name()
                     + "] of type ["
                     + typeName()
-                    + "] doesn't not support indexing multiple values for the same field in the same document"
+                    + "] doesn't support indexing multiple values for the same field in the same document"
             );
         }
         if (Token.VALUE_NULL == context.parser().currentToken()) {