Revert return type change to avoid linting failure

Author: allenkim0129

sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/VectorIndexTest.java

@@ -94,8 +94,8 @@ public void shouldCreateVectorEmbeddingPolicy() {
             .setIncludedPaths(ImmutableList.of(includedPath1, includedPath2))
             .setVectorIndexes(populateVectorIndexes());
 
-        CosmosVectorEmbeddingPolicy cosmosVectorEmbeddingPolicy = new CosmosVectorEmbeddingPolicy()
-            .setCosmosVectorEmbeddings(populateEmbeddings());
+        CosmosVectorEmbeddingPolicy cosmosVectorEmbeddingPolicy = new CosmosVectorEmbeddingPolicy();
+        cosmosVectorEmbeddingPolicy.setCosmosVectorEmbeddings(populateEmbeddings());
 
         CosmosContainerProperties collectionDefinition = new CosmosContainerProperties(UUID.randomUUID().toString(), partitionKeyDef)
             .setIndexingPolicy(indexingPolicy)

sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/models/CosmosVectorEmbeddingPolicy.java

@@ -44,12 +44,11 @@ public List<CosmosVectorEmbedding> getVectorEmbeddings() {
      *
      * @param cosmosVectorEmbeddings paths for embeddings along with path-specific settings for the item.
      */
-    public CosmosVectorEmbeddingPolicy setCosmosVectorEmbeddings(List<CosmosVectorEmbedding> cosmosVectorEmbeddings) {
+    public void setCosmosVectorEmbeddings(List<CosmosVectorEmbedding> cosmosVectorEmbeddings) {
         cosmosVectorEmbeddings.forEach(embedding -> {
             checkNotNull(embedding, "Null values are not allowed in cosmosVectorEmbeddings list.");
         });
         this.cosmosVectorEmbeddings = cosmosVectorEmbeddings;
-        return this;
     }
 
 }