Use the correct name of extra that adds GCS support (#412)
diff --git a/mkdocs/docs/index.md b/mkdocs/docs/index.md
index ffe3ab4..a8c2c6b 100644
--- a/mkdocs/docs/index.md
+++ b/mkdocs/docs/index.md
@@ -55,9 +55,9 @@
| s3fs | S3FS as a FileIO implementation to interact with the object store |
| adlfs | ADLFS as a FileIO implementation to interact with the object store |
| snappy | Support for snappy Avro compression |
-| gcs | GCS as the FileIO implementation to interact with the object store |
+| gcsfs | GCSFS as a FileIO implementation to interact with the object store |
-You either need to install `s3fs`, `adlfs`, `gcs`, or `pyarrow` to be able to fetch files from an object store.
+You either need to install `s3fs`, `adlfs`, `gcsfs`, or `pyarrow` to be able to fetch files from an object store.
## Connecting to a catalog
