Update docs/cugraph/source/nx_cugraph/how-it-works.md

Co-authored-by: Erik Welch <[email protected]>

docs/cugraph/source/nx_cugraph/how-it-works.md

@@ -54,7 +54,7 @@ directly in their code to access the utilities provided to create a Graph
 instance specifically for the nx-cugraph backend.
 
 Example:
-```
+```python
 import networkx as nx
 import nx_cugraph as nxcg