Update base-testnet.mdx (#290)

Author: MichaelMacaulay

pages/en/cookbook/base-testnet.mdx

@@ -29,7 +29,7 @@ Go to the [Subgraph Studio](https://thegraph.com/studio/) and connect your crypt
 
 Once connected, click "Create a Subgraph" and enter a name for your subgraph.
 
-Select "Base (testnet)" as the network and click Create Subgraph.
+Select "Base (testnet)" as the indexed blockchain and click Create Subgraph.
 
 ### 3. Initialize your Subgraph
 
@@ -77,15 +77,15 @@ Before you can deploy your subgraph, you will need to authenticate with the Subg
 
 Authenticate the subgraph on studio
 
-```sh
+```
 graph auth --studio <DEPLOY_KEY>
 ```
 
 Next, enter your subgraph's directory.
 
-````sh
+```
     cd <SUBGRAPH_DIRECTORY>
-    ```
+```
 
 Build your subgraph with the following command:
 
@@ -106,4 +106,3 @@ Once your subgraph is deployed, you can query it from your dapp using the `Devel
 Note - Studio API is rate-limited. Hence should preferably be used for development and testing.
 
 To learn more about querying data from your subgraph, see the [Querying a Subgraph](/querying/querying-the-graph) page.
-````