README: Improve slightly
@@ -73,7 +73,7 @@ cargo run -p graph-node -- \
--subgraph IPFS_HASH
```
-This will also spins up a GraphiQL interface at `http://127.0.0.1:8000/`
+This will also spin up a GraphiQL interface at `http://127.0.0.1:8000/`.
### Command-line interface
