docs: update graph_rag.mdx (#31548)

**Description:** fix broken links

Author: ccmien

docs/docs/integrations/retrievers/graph_rag.mdx

@@ -31,20 +31,20 @@ retrieval over an **existing** vector store.
 
 ## Benefits
 
-* [**Link based on existing metadata:**](https://datastax.github.io/graph-rag/get-started/)
+* [**Link based on existing metadata:**](https://datastax.github.io/graph-rag/guide/get-started/)
   Use existing metadata fields without additional processing. Retrieve more from an
   existing vector store!
 
-* [**Change links on demand:**](https://datastax.github.io/graph-rag/get-started/edges/)
+* [**Change links on demand:**](https://datastax.github.io/graph-rag/guide/edges/)
   Edges can be specified on-the-fly, allowing different relationships to be traversed
   based on the question.
 
 
-* [**Pluggable Traversal Strategies:**](https://datastax.github.io/graph-rag/get-started/strategies/)
+* [**Pluggable Traversal Strategies:**](https://datastax.github.io/graph-rag/guide/strategies/)
   Use built-in traversal strategies like Eager or MMR, or define custom logic to select
   which nodes to explore.
 
-* [**Broad compatibility:**](https://datastax.github.io/graph-rag/get-started/adapters/)
+* [**Broad compatibility:**](https://datastax.github.io/graph-rag/guide/adapters/)
   Adapters are available for a variety of vector stores with support for additional
   stores easily added.