Azure Cosmos DB | quickstart-sdk | Add Java vector store quickstart

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: diberry

articles/cosmos-db/TOC.yml

@@ -43,6 +43,9 @@
         - name: Query a vector store with a .NET app
           displayName: Quickstart, vector search, vector database, dotnet
           href: quickstart-vector-store-dotnet.md
+          - name: Query a vector store with a Java app
+            displayName: Quickstart, vector search, vector database, Java
+            href: quickstart-vector-store-java.md
         - name: Create a vector index with a Node.js app
           displayName: Quickstart, vector search, vector index, Node.js, TypeScript, DiskANN
           href: quickstart-create-vector-index-typescript.md